How bad is dog poop for the environment? In a word, TERRIBLE. Dog waste is not a fertilizer and is toxic to your lawn and environment. The pollutant poisons our watersheds, rivers, and lakes. We are not scientists, but below are some diseases carried by dog waste. As stewards to the land, we encourage all pet owners, if you are not going to scoop up your dog’s waste, please have a service like ours help protect your family, pets, and community.