Never dump it. Antifreeze is a toxic pollutant that can kill not only aquatic life but also pets when they drink from contaminated puddles. With proper mowing, fertilizing and watering, you can significantly reduce the amount of chemicals needed on your lawn. Spot treat only. Detergents are pollutants that contain phosphorus which contribute to algae blooms.
Algae blooms deplete waterways of oxygen and cause fish kills.
Pet and other animal waste is raw sewage that releases bacteria and oxygen-consuming materials into our waterways. Collect animal waste and flush it down the toilet. It also clogs storm drains, which contributes to flooding. By leaving grass clippings on the lawn, you reduce the need for nitrogen fertilizer as much as one third. If necessary, bag yard waste in clear plastic bags and place at curbside on your regular garbage collection day.