well these cats are outdoors for a reason! They refused to use a litterbox. Didn't matter how many they were or how clean they were...they still went on our beds. So they got booted out and the dogs have run of the house! I can stand an occasional accident on the floor but when you clean litterboxes, go to bed and wake up to find cat poop on your couch or bed it gets rather annoying. So the cats are not welcome in the house! Oh the vet could find nothing wrong with them.