Does anyone know what I could try to get my cats from going potty in my flowerbed. It is one little spot of loose dirt by the back door and the smell of urine is horrible. There was also some loose dirt from a gopher by a little evergreen and the cats started using that spot and it killed the tree! I have scraped up all the loose dirt but they won't stop. I have 2 neutered male cats that are about 14 years old. They just started this about 4 months ago. Any ideas are greatly appreciated. Thanks!