Center for Sustainability Solutions (CSS) conducted a poster campaign to increase awareness on keeping university environment clean. The posters highlighted the importance of environment cleanliness in eradicating disease causing mosquito breeding sites. Photos of mosquito breeding sites captured during the university environment cleanliness programme of Green task Force in January 2018 were used in designing the posters. Measures to eliminate the mosquito breeding sites shown in the pictures were taken soon after the detection with the assistant of Works and Landscape divisions. Dr. Dilrukshi Ratnayake designed the poster and coordinated the awareness campaign.