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The socialization activity on personal and environmental hygiene at SDN 19 Sungai Kakap was conducted to improve students’ knowledge, attitudes, and awareness regarding the importance of maintaining personal cleanliness and a healthy school environment. This activity addressed the common issue of limited understanding and practice of hygiene among elementary school students, which can affect health and learning outcomes. The methods used included interactive counseling sessions, practical demonstrations of proper hygiene practices such as handwashing and waste disposal, and the use of visual educational media to increase student engagement and comprehension. The effectiveness of the activity was measured using pre-test and post-test evaluations. The results showed a 75% increase in students’ knowledge levels after the intervention, accompanied by observable positive behavioral changes related to cleanliness both at school and at home. Students demonstrated improved habits in maintaining personal hygiene and participating in keeping their environment clean. Despite challenges such as limited time allocation and inadequate cleaning facilities, the activity successfully fostered sustainable awareness and encouraged the formation of healthy habits. Therefore, it is recommended that similar socialization activities be conducted regularly using varied educational methods and supported by adequate hygiene facilities to strengthen long-term behavioral change.

The age of 4-6 years is an age that is vulnerable to disease because it is at this age that children's motoric starts to be active. Without realizing it, what children do is often close to germs that can cause diseases such as flu, cough, diarrhea. Hand washing is the process of mechanically removing dirt and dust from the skin surface and reducing the number of microorganisms. The purpose of hand washing is to eliminate the number of microorganisms. This activity is carried out through the means of joint learning activities in the form of face-to-face in groups, given counseling, including: material and practice of wet hand washing with running water and soap and dry hand washing with a hand sanitaizer. The results of this activity were analyzed using a fun learning method. The data used is numerical data from the observation of hand washing skills checklist. From the test results there is an effect of providing counseling on hand washing techniques on the hand washing skills of kindergarten students. The habit of washing hands using soap from an early age, it is hoped that later they will become a generation that is aware of the importance of cleanliness, not only personal hygiene, but also environmental hygiene. Not only that, with this simple thing that is done regularly and purposefully, children will later learn to do other habits correctly. One way to prevent children from getting sick is by washing hands. This handwashing habit should be instilled since.

Population density plays a critical role in shaping public health outcomes and environmental quality, particularly in rapidly urbanizing regions. This study aims to analyze the relationship between high population density and its impacts on sanitation conditions, air quality, access to clean water, and the incidence of various diseases in densely populated areas. The research adopts a qualitative descriptive approach by combining a comprehensive literature review with field observations conducted in several urban areas characterized by high population concentration. The findings reveal that increased population density is closely associated with environmental degradation, including inadequate sanitation systems, reduced air quality due to pollution, and limited availability of clean water. These environmental challenges contribute directly to a higher prevalence of health problems, such as respiratory infections, waterborne diseases, and other communicable illnesses. Overcrowded living conditions also intensify the spread of diseases, placing additional pressure on public health infrastructure. Furthermore, the study highlights that insufficient public facilities and poor environmental management exacerbate the negative effects of population density on both health and the environment. To address these challenges, effective strategies are required, including population growth control, improved urban planning, and enhanced investment in public health and environmental sanitation facilities. Strengthening community awareness and participation in maintaining environmental cleanliness is also essential. Overall, this study emphasizes the need for integrated policies that balance population management with sustainable environmental and public health development.  

Handwashing with Soap (CTPS) is the activity of cleaning hands using clean, running water and soap to remove dirt, oil, and various germs such as viruses, bacteria, and parasites that may cling to the skin. As one of the most effective, simplest, and most affordable methods of preventing infectious diseases, CTPS is highly important to practice consistently, especially among students at Public Elementary School 283 located in Waitomu Hamlet, Leihitu District, Central Maluku Regency. However, observations indicate that after school activities or playtime, several students still show reluctance to wash their hands, which may be influenced by low awareness, limited understanding of hygiene, insufficient supervision, or the absence of strong daily habits related to cleanliness. This issue reflects the need for more structured hygiene education, continuous reminders, and interactive learning methods to instill good handwashing habits. In addition, improving supporting facilities—such as accessible handwashing stations, adequate soap supply, and visual posters—can motivate students to practice CTPS more regularly. Strengthening CTPS awareness and habits is expected to reduce the risk of disease transmission, foster a healthier school environment, and encourage students to adopt lifelong hygiene practices that benefit both their personal well-being and the wider community.

Sanitation facilities are a fundamental element that contributes to creating a healthy, comfortable, and productive learning environment in higher education institutions. This study aims to describe the availability of sanitation facilities in the Office Administration Management Study Program, analyze the factors that influence their condition, and explore the perspectives of the academic community regarding their quality and usefulness. A qualitative descriptive approach was employed, with data collected through field observations, in-depth interviews, and documentation. The informants of this study consisted of students, lecturers, administrative staff, and facility managers. The findings reveal that sanitation facilities such as toilets, sinks, and trash bins remain inadequate in terms of quantity, physical condition, and distribution within the campus area. Several key challenges were identified, including limited financial resources, suboptimal management practices, low awareness and discipline among users, and the absence of clear and strict institutional policies related to sanitation standards. The academic community generally perceives that the available sanitation facilities do not meet the expected standards of comfort and hygiene, which may negatively affect the quality of learning experiences and academic activities. This study highlights the importance of strategic planning, adequate budget allocation, and supportive institutional policies in improving the quality of sanitation facilities. The implications of the study are expected to provide valuable input for higher education managers in formulating policies and planning facilities that are more responsive to the needs of the academic community, thereby supporting effective, professional, and sustainable educational governance.

School cleanliness is a fundamental aspect in creating a healthy, comfortable, and character-based learning environment. This community service activity aims to raise students’ awareness of the importance of maintaining school environmental hygiene through a Participatory Action Research (PAR) approach conducted at MDTA Nurul Huda, Padamaju Village, Pagelaran District, Cianjur Regency. The activity consisted of several stages: observation, educational counseling, collaborative cleaning activities, and participatory evaluation. The results show an increased awareness among students of the importance of cleanliness, a more organized school environment, and active involvement of teachers and students in maintaining school facilities. Teachers served as role models who significantly influenced students’ clean habits. The activity also affirmed the integration of Islamic values in hygiene education, aligning with the principle of an-nadhafah minal iman (cleanliness is part of faith). Therefore, the school cleanliness education program at MDTA Nurul Huda is not merely a physical cleaning action but also a sustainable form of character education based on spiritual and social values.

Business location plays a crucial role in determining the success and development of a business, particularly for Micro, Small, and Medium Enterprises (MSMEs). This study aims to analyze how business location influences the performance and sustainability of the Fresh and Healthy Juice MSME in Medan. The research method used is a qualitative descriptive approach, with data collection techniques through direct observation, interviews with business owners, and documentation of daily business activities. The results show that selecting a strategic location, namely on the main road and close to busy areas such as markets, schools, and offices, has a positive impact on increasing the number of customers and sales volume. Factors such as easy transportation access, environmental cleanliness, comfort of the place, and the attractive appearance of the store also support a positive product image in the eyes of consumers. In addition, an easily accessible location simplifies the distribution of raw materials and expands opportunities for word-of-mouth promotion. Based on the analysis, it can be concluded that the right business location is an important strategy in increasing competitiveness and business revenue. Therefore, for MSMEs, selecting a location that suits the target market needs to be carefully considered so that the business can grow sustainably.

The problem of waste in rural areas is still a serious issue that has an impact on environmental health and the quality of life of the community. Batu Licin Village, Gunung Lengkuas Village, East Bintan District, Bintan Regency is one of the areas that faces similar problems, where household waste is still scattered and has not been handled optimally. This community service activity offers innovative solutions through the manufacture of rocket stoves as a means of efficiently burning certain organic and inorganic waste, as well as the construction of garbage booths as a place to store and sort waste before further processing. The implementation method involves counseling to residents, making prototypes, and direct practice of using rocket stoves and garbage booths by local communities. In addition, this activity also emphasizes the importance of changing community behavior in managing waste with the 3R (reduce, reuse, recycle) principle. The results of the activity show an increase in public awareness in managing waste independently, reducing the accumulation of waste in the village environment, and the emergence of alternative waste processing that is environmentally friendly, energy-efficient, and easy to apply. This innovation not only helps overcome the problem of household waste, but also provides educational value and empowers the community in maintaining the cleanliness and sustainability of the village environment. With the implementation of rocket stoves and garbage booths, it is hoped that a cleaner, healthier, and more viable village environment will be created in the long term.

Community Service Program (KKN) is a form of student community service by directly applying scientific knowledge in the field. The 2025 Unimed KKN was conducted in Durin Simbelang Village, Pancur Batu District, Deli Serdang Regency, with the aim of empowering local potential and improving the quality of education, social, and environmental aspects of the village. This research used a qualitative descriptive approach with participatory methods, in which students actively engaged with the community in each program. Data were collected through observation, interviews, documentation, and direct participation, then analyzed descriptively through the stages of reduction, presentation, and conclusion. Research findings indicate that the Community Service Program (KKN) has had a significant impact in various aspects. In the economic sector, the downstreaming and marketing of processed starfruit products has successfully improved residents' skills in processing harvested produce into value-added products. In the educational sector, activities such as "Ceria Calistung Ceria," "Si Cerdik Math," "English Fun Club," "Savings for Small Change," "Education for the Creative Economy," and "Wisdom Digital Literacy" have proven effective in improving academic skills, creativity, and positive character traits among the younger generation. In the social and environmental aspects, the "gotong royong" (mutual cooperation) program, rhythmic gymnastics, educational trash signage, volleyball court construction, gate decoration, and 17th August competitions have strengthened social cohesion, raised awareness of healthy living, and increased concern for environmental cleanliness.

This community service initiative aimed to enhance public awareness in Lam Keumok Village regarding environmental cleanliness and health through the installation of educational posters. The project was motivated by the prevalence of environment-related diseases and limited public access to effective visual information. The method used was educational and observational with limited participatory engagement. Poster were designed to be visually appealing and easily understood, then placed in strategic public locations such as village halls and places of worship. Observations revealed increased public engagement, marked by spontaneous interactions like reading and discussing the posters. The media proved effective in directly conveying messages, strengthening collective awarenes, and fostering civic involvement. Use of local language and contextual visuals ensured message clarity. Despite the short implementation period, the long-term potential impact is promising as repeated visual exposure can influence behavioral change. The findings conclude that educational posters are a powerful communication tool in rural areas and suggest the strategi can be replicated in similar settings. Community participation in content planning was a key factor in enhancing ownership and ensuring program sustainability.

Waste management has become an increasingly complex environmental issue, particularly in urban areas and densely populated settlements. The lack of public awareness in disposing of waste properly has caused numerous negative impacts, including soil and water pollution, flooding due to clogged drainage systems, reduced environmental aesthetics, and the spread of infectious diseases. These conditions indicate that the waste problem is not merely a technical issue of collection and disposal, but also strongly related to people’s behavior and environmental awareness. Therefore, a simple, practical, and effective approach is required to encourage behavioral change in daily life. One alternative solution is through visual education by using waste signboards that display educational and persuasive messages. These signboards are installed in strategic locations to serve as direct reminders for residents to care more about environmental cleanliness. This study aims to analyze the effectiveness of waste education signboards in improving community understanding and discipline in waste disposal practices. The methods applied included counseling sessions, participatory discussions with residents, designing communicative and attractive signboards, and installing them in high-traffic areas such as main roads, schools, worship places, and public spaces. The results of the activity indicated an increase in public knowledge regarding the impacts of waste, active participation in maintaining cleanliness, and a significant reduction in littering behavior around the areas where the signboards were installed. Furthermore, residents gave positive feedback and expressed their willingness to expand the initiative by adding more signboards in other locations as part of sustainable action. In conclusion, educational signboards proved to be an effective, low-cost, and practical medium to raise community awareness. Beyond delivering environmental messages, the signboards also helped strengthen collective commitment among residents to create a clean, healthy, and sustainable living environment.

Complementary therapy is increasingly receiving attention as an alternative approach in supporting the healing process and improving the quality of life of the community. One of the therapies that is popular among the people is cupping, which is known as a traditional method with a spiritual basis and extensive health benefits. This community service activity aims to introduce cupping therapy and increase public understanding of the basic principles, benefits, and safety aspects in practice. The activity will be carried out in August 2025 by directly involving the community through the method of health education lectures and case discussions in the field. The counseling material includes the history of cupping, medical indications, implementation procedures, and the importance of maintaining the cleanliness of the device and the therapeutic environment. People's motivations in choosing complementary therapy, especially cupping include affordable cost factors, therapist friendliness, family support, religious beliefs, and belief in the effectiveness of natural remedies. The results showed a significant increase in the knowledge and awareness of the community, especially students, regarding cupping therapy as part of a safe and beneficial complementary approach. The conclusion of this activity emphasizes that education about complementary therapies, especially cupping, can be an effective strategy in expanding public health insights and encouraging the wise and responsible use of traditional therapies.

Community Service Program (Kuliah Kerja Nyata/KKN) is a community service program integrated into the higher education curriculum, aiming for students to apply theoretical knowledge into real-world practice and contribute to community development and empowerment. This KKN activity was carried out in Dusun IV, Tuntungan II Village, Deli Serdang Regency, from July 1 to August 1, 2025. The main objective of this program was to address various local issues such as limited use of appropriate technology, low environmental awareness, and a lack of human resource development. The method used was field observation to ensure that the programs implemented were in line with the community's needs and potential. Various activities were carried out, including community clean-up (gotong royong), teaching at elementary schools, health counseling for mothers and the elderly, Qur'an recitation lessons for children, compost making, planting a "living pharmacy" (apotek hidup), and assisting with UMKM product marketing. The results of this program showed a positive impact, such as increased community knowledge of health, environmental cleanliness, and the use of organic fertilizer. Furthermore, UMKM assistance successfully improved business owners' understanding of digital marketing. Overall, this KKN activity successfully created synergy between the university, the village government, and the community, while also providing valuable experience for students in leadership and teamwork.

The waste problem in Tamanan village is an issue that needs serious attention because of its impact on environmental pollution and public health. One of the main challenges is the low awareness of residents, especially elementary school children, in terms of good and correct waste management. A lot of waste is thrown carelessly without sorting, which results in a decrease in the quality of cleanliness and health of the village environment. This community service program aims to improve students' understanding and skills in waste management through a Participatory Action Research (PAR) approach for 40 days. This program involves students of MI Nurur Rahman and SDN Tamanan 1 as the main subjects. The activities carried out include socialization about the importance of waste management, the delivery of material on types of waste, as well as the practice of sorting organic, inorganic, and B3 waste. In addition, the installation of educational media in the school environment and evaluation monitoring were also carried out. The results of the evaluation showed that 73% of students were able to answer the quiz questions correctly ≥70%, which indicates their good understanding of waste management. Some students also began to implement the habit of separating waste at home and inviting families to participate. Support from village officials and the existence of educational media are expected to strengthen the sustainability of this program. Participatory approaches have proven to be effective in raising environmental awareness and can be implemented sustainably through collaboration between schools, communities, and village governments.

Schools are not only institutions for the transfer of knowledge but also environments that play a crucial role in shaping students’ behavior and instilling positive habits, one of which is environmental care. One form of environmental concern that can be cultivated from an early age is the discipline of disposing of waste properly. However, SD Negeri Jambewangi, located in Dusun Pesantren, has not yet fully implemented effective waste sorting practices. Waste disposal is still carried out without distinguishing between organic and inorganic waste, which may have negative impacts on the school environment. To address this issue, community service activities were carried out by KKN students from Universitas Tidar through outreach programs and the distribution of sorted waste bins. The socialization activity applied the Extend Parallel Process Model (EPPM) communication strategy using a Severity Model approach, which emphasized the dangers and consequences of improper waste management practices. During the sessions, students were encouraged to discuss and identify various types of waste, as well as the potential environmental and health impacts associated with them. Direct practice was also provided by encouraging students to actively participate in sorting waste before disposal into the designated bins. The implementation of this program showed a positive impact, as students demonstrated an increased understanding of waste management and began to practice sorting waste more consistently. The provision of separate bins for organic and inorganic waste further facilitated this new habit. It is expected that the discipline of sorting and properly disposing of waste will continue to be applied by students, teachers, and the entire school community. Such continuous practices can foster collective awareness, contribute to maintaining environmental cleanliness, and provide long-term benefits not only for the school but also for the surrounding community.

Tawangsari Hamlet, Tejosari Village, Ngablak District, Magelang Regency, faces serious waste management challenges, reflected in the high daily waste production and the inactivity of waste banks post-COVID-19. To address this issue, the Tidar University Community Service Program (KKN) was implemented, aiming to improve environmental cleanliness through active community participation. This program also supports the achievement of the "Climate Action" goal in the Sustainable Development Goals (SDGs), which focuses on combating climate change caused by air pollution and reducing environmental pollution. The method used in this program is Participatory Action Research (PAR), which is oriented towards community empowerment by involving all stakeholders in every stage of implementation. The activity began with a series of observations to understand the condition of waste management in the community. Then, a waste management tool was created in the form of a smoke-free waste incinerator, which aims to manage inorganic waste in an environmentally friendly manner. In addition, trash bins to facilitate waste sorting at the household level were also provided. Socialization and mentoring for the community, especially youth organizations, were carried out to introduce and educate them on the correct use of incinerators and waste sorting. A demonstration of incinerator use was also conducted with the community, which proved to increase understanding and active participation. The implementation of the incinerator and waste sorting facility demonstrated that these measures were effective in addressing the waste problem in Tawangsari Hamlet and contributed to a cleaner and healthier environment. Furthermore, the program successfully raised environmental awareness among the Tawangsari Hamlet community. Through direct involvement in the waste management process, residents not only gained new knowledge about the importance of waste sorting but also experienced the direct benefits of implementing smoke-free incinerator technology.Keywords: waste management, low-smoke incinerator, Climate Action, SDGs, community empowerment, environmental pollution, Magelang Regency

During storage and before consumption, grains often experience a decline in quality, nutritional content, and cleanliness due to pest attacks. Botanical insecticides are considered an alternative method to reduce dependence on harmful chemical pesticides. This study aimed to evaluate the effectiveness of three concentrations of silver nanoparticles (AgNPs) synthesized from the leaves of Cymbopogon citratus against Cadra cautella (Walk.) (Lepidoptera: Pyralidae) and their potential as biological control agents. The selection of C. cautella as the test organism was based on the limited number of studies examining this pest. The AgNPs used were synthesized through an eco-friendly method, and their optical and physical properties were analyzed using UV-Vis spectroscopy. The results demonstrated that AgNPs synthesized from C. citratus extract showed high effectiveness in controlling the eggs and second instar larvae of C. cautella. Egg mortality reached 80.3% at a concentration of 40 μg/ml after 24 hours of exposure, followed by 72.9% at 30 μg/ml, and 65.8% at 20 μg/ml. In contrast, the control group showed no egg mortality. Similarly, larval mortality rates were 74.9%, 65.8%, and 60.2% for concentrations of 40 μg/ml, 30 μg/ml, and 20 μg/ml, respectively. These findings indicate that higher concentrations of AgNPs lead to greater mortality in both eggs and larvae. This study highlights the potential of green-synthesized AgNPs from C. citratus leaves as an effective and eco-friendly biopesticide. Their significant impact on egg and larval mortality suggests that they can be developed as an alternative pest control strategy in stored grains, thereby reducing reliance on conventional chemical pesticides that are detrimental to human health and the environment. Further research is recommended to explore their long-term efficacy, safety, and integration into sustainable grain storage management.

Waste management is a major challenge in sustainable development, particularly in areas with tourism potential. Paya Jeget Village, Pegasing District, Central Aceh Regency, a developing tourist destination, is addressing waste management issues that require serious attention. The increasing number of tourists visiting the village has the potential to significantly increase the volume of waste generated. Without proper management, this condition can threaten environmental sustainability and public health. Therefore, a community-based waste management approach is needed that involves the active participation of all stakeholders, from village government, community leaders, tourism operators, and the general public. The objectives of this community service activity are to increase public knowledge and awareness about sustainable waste management, develop an integrated community-based waste management system, and establish independent community waste management groups to realize a clean and healthy tourist destination. Implementation methods include outreach and education, practical training, the formation of working groups, and ongoing mentoring to ensure the program runs consistently. The community service activities carried out on June 2, 2025 have achieved the following results: 45 participants participated in the outreach activities, 90% of participants understood the importance of waste from a religious and environmental perspective, the formation of collective awareness to maintain environmental cleanliness, the formation of a waste management group consisting of 15 members, the availability of waste sorting places at three strategic points, the implementation of waste sorting activities at the household level, and the start of organic waste composting activities. In addition, this activity also succeeded in fostering a spirit of mutual cooperation in waste management and improving residents' skills in processing organic waste into compost.

Pempek is a traditional Indonesian food that is widely loved by people because of its delicious taste and easy availability in various regions, especially in coastal areas. However, although pempek is made from ingredients that are generally safe for consumption, the unhygienic production process has the potential to cause contamination by pathogenic bacteria. The process of making pempek involves many hands, unsterile processing, and inadequate storage can increase the risk of bacterial proliferation, especially in food served by street vendors. This study aims to identify the presence of pathogenic bacteria in pempek sold by street vendors around the campus environment. By using sample dilution methods, inoculation onto Nutrient Agar (NA) media, as well as colony morphology differentiation and Gram staining, this study successfully identified several pathogenic bacteria that have the potential to harm health. The bacteria found included Staphylococcus sp., known as a pathogen causing food poisoning, E. coli which can cause gastrointestinal disorders, and Pseudomonas sp. which can cause skin and respiratory infections. Based on the results of this study, it is important for local food producers to maintain cleanliness and ensure hygienic production processes so that the food sold is safe for consumption. Furthermore, food quality monitoring by authorities and education for producers on the importance of hygiene in food preparation need to be strengthened to prevent the risk of foodborne illnesses. Furthermore, regular inspections of food sold by street vendors are crucial to ensure it is free from harmful microbial contamination. Implementing proper sanitation procedures at every stage of pempek production, from selecting raw materials to serving, can minimize the risk of microbial contamination.

The Community-Based Sanitation Program (PAMSIMAS) is a government initiative aimed at improving community access to proper sanitation facilities, particularly in rural areas. This study aims to evaluate the effectiveness of the program in Tanjung Aman Village, Wampu District, Langkat Regency. A qualitative approach was used with a phenomenological method, focusing on the experiences and perceptions of local residents and village officials regarding program implementation. Data were collected through in-depth interviews, field observations, and documentation, involving 15 informants comprising residents, sanitation cadres, and village officials. The findings show that technically, the sanitation facilities function well; however, sustainability in usage faces challenges such as low community participation, weak maintenance systems, and the absence of binding local regulations. Community perception of the program is generally positive, particularly regarding improvements in environmental cleanliness and comfort in using the facilities, yet unequal access remains a significant issue. The study concludes that the success of PAMSIMAS largely depends on collaboration among the community, local cadres, and village policies. Strategic recommendations include the formulation of Village Regulations, regular training for cadres, and the establishment of a community-based sanitation management institution. With this approach, the program is expected to operate sustainably and provide long-term benefits to rural communities.