For cleaning I've been using a product called Nature's Miracle. I had never heard of it until I asked around about products for such incidences, and it's appropriately named because once I'm done, you'd never guess there was cat pee anywhere in the house. We don't let him out, however, that doesn't mean he doesn't sneak out from time to time, but generally, no, he is an indoor cat. We got him checked for a UTI shortly after this behavior started and he's all set on that. I know I don't get to spend that much time with him, but my little brother is home a lot and we have another cat and a dog and they all get along great, so i don't think it's any sort of thing from him being alone. I'm definitely going to check out that litter though, as well as those other products. Do you know if those products are sold here in the US? He's a good kitty, he's just a little devious, and I would hate to have to get rid of him because of that, especially since I'm a bit devious myself (aside from peeing in inappropriate places ) Thanks all!