Hi, I have an older cat who has suddenly decided the world is his personal bathroom... he has a history of crystals, so of course, I already brought it up to his vet. They think it's a territorial dispute between him and the other cat (the big one may not like him using "his" cat genie). Anyway, my house smells now, and I'm getting sick of picking up the messes... usually I'm great at solving cat issues, but I'm stuck when it comes to this little guy. He doesn't respond to anything I try. I'm sure the ideal solution is a second litter box, but it's not feasible at all. Can someone help me get him using the genie again? I keep it clean and he only recently started doing this...