I have 2 litter boxes, but they both use both of them even though I have tried to stop that. They are pooping everywhere in and out of the box. My house stinks! I have tried diff. litter, I clean both of them everyday. I have tried the non- marking spray, the pet odor removers I scrub my carpet constantly. I love my cats but I'm ready to get rid of them and I don't want to. What can I do, please help!!!!!