I'm having a problem with my cat Mojave. Me and my husband went on vacation for a week and had a friend take care Mojave and Sassy. He told us they were pooping on the carpet. I figured it was b/c we left them and they were mad at us. I then figured out it was Mojave. Well we have been home since Wed night and he is still doing it. We will only find it in the mornings. Any other time he does it in the litter when we are around. He never used to do that. He's known how to use the litter since day one. My husband just went into the closet and found poop in the closet. We thought he just did it in the corner in the hallway. I want to know why he is doing this and what can I do???!!!! please help