Trash on college campuses can have negative effects if not properly disposed of. Improper disposal is caused by a lack of garbage collection, disposal mechanisms, and people not taking time to properly dispose of or clean up trash. This can lead to diseases spreading as garbage harbors rats and fleas, communities becoming unlivable as trash piles up, and air and water pollution from burning trash and litter. Proper recycling of materials like glass, paper, cardboard, plastics, and trash disposal can help reduce these problems and keep campuses and the environment beautiful and safe.