My 14 month-old cats are pooping on my couch. What can I do to get this to stop? It's not everyday and I don't know which one it is. I've read and tried several methods - covering the couch with a tarp so they wouldn't like the sound of it when they climb on it, putting their favorite blankets and toys on the couch (since kitties normally don't poop where they like to sleep), etc. What else can I try? Nothing has changed in our household that I can think of that would be causing stress, same kitty litter brand, same kitty litter box, no new people, they are still eating the same and have the same amount of energy and being very loving and cuddly...This issue is starting to wreak havoc on my marriage and my life. The stress of it is starting to really wear me down. Any suggestions? Please help!