These are certainly pests for me. I live in a neighbourhood that is not fenced. Due to the space, size and layout, it's not quite feasible to put a fence in. (Plus it would be quite expensive.) Anyhoo, there are at least two dogs that like to use our lawn as their toilet. Though I am more of a cat person, I don't mind dogs. Today I gave a friendly pat to the neighbours dog. Then he pooped on my lawn. While I watched in horror. I need to know what I can put down that is natural/organic on my entire lawn (50 feet by 40 feet and along the side which is another 50 feet by ten) that will put a stop to this immediately. I also have have another dog (there's three delinquents in total) directly beside me. This evening my cat was out on his leash, completely minding his business on the far side of the lawn and the dog from next door ran after him chasing my poor cat inside. He then proceeded to mark his territory on my lilacs. I need something that will nip this territorial thing in the bud because this is ~my~ lawn and my cat enjoys having time outside. (The cat has already gone to the vet because he was chased up a tree and pulled his nail out. It took a good week for him to get the courage to go out again, even with me holding him.) The neighbour directly next door knows about his dog chasing my cat. He has a cat and we're not sure what's up with why his dog doesn't like mine. He has been quite nice when he knows I have my cat out that he'll take his dog inside. But, I'm not going to go knocking on his door each time I want to put my cat out. I really believe this is a territorial thing (as per the marking and grunting after the chase) and I think if I can deter the dog from thinking my lawn is his lawn this situation will go away. I also believe one of the neighbours cats has used my garden as a litter box - I could use some help with that too. For the other two dogs, as I just moved in, I do not know them well enough and I am not the most tactful person in situations such as this. I have seen them at all since I moved in so I am not comfortable confronting them. Any help and tips on this I will be so greatly appreciative. (And my grass... tulips... lilacs...) Thank you.