You can only buy it online, but I swear by Nok Out made by Osborn. One of my cats had issues a few years back & my hairdresser told me about it, & IMO it works better than Nature's Miracle. I know Trillian was looking for an at home remedy, but unless it's something that can go in the washing machine, I don't know of any that completely get the smell out. And cats will usually continue to pee in places they've peed before due to the smell.
Have you bought at least one more litter box? I have 2 cats & 2 boxes, although it's suggested to have one per cat plus an extra.
www.nokout.com/
Edited by: BREWERFAN71 at: 6/21/2010 (14:34)