Hi all, I have a little issue with my neighbor's dog. We share a fence in the backyard and there's a little slope hat creates a little hole between fence and ground. My neighbors dog which is huge, pees there always and because of said slope, the pee drains to my backyard. in the winter is worst because it freezes and it's yellow, yes it's a problem. I love the dog and our neighbors but they're not home during the day. Is there something I can clean my fence that will also serve as a deterrentfor the dog? I've read vinegar and mint but of course I don't want to cause any discomfort to him. I cant clean his side of the fence, only my side and the ground. Attached is a picture.