I am not sure if there is anything I can do about the animals who choose to use my lawn and yard for their toilet. I had imagined lead poisoning, though that might not be friendly. The problem is simple, I don't have animals so there for I don't feel I should have to clean up after some other persons animal. I have tried a product called "Ropel" with moderate to poor results, Cayenne pepper powder with moderate to good results. I would like to hear of what others have done to keep the neighbors dog from crapping on their lawn. The big hitch is I can not prove who's dog it is??? I was thinking I could use a motion detector game camera to get a "mug shot".