My ex-husband recently left the state and dumped his 4 cats on me in my tiny apartment (where I already have 2 cats). At first they were all using the litterbox like they should and then the fat ugly marmalade Tater decided to start pissing all over the place, and now some of the other cats are doing the same. I figure they're marking their territory, so how can I get them to stop? I tried the cat pheromone spray and it didn't work. Starting today every time I catch them pissing I grab their heads and mop up the piss with their face.

I really don't want to put them in a shelter, except for the aforementioned fat stupid one, but if I did, his buttbuddy Jake (cat pictured) would die of misery.

Is there any truly effective method?