oh my god, bloody cat wee, we have 4, yes 4, of the buggers, and they are all tt, but i think my old girl is getting a bit sick or lazy or something, because she thinks it;s a bit of a free for all to pee wherever she wants. on clothes and stuff that can go in the washing machine, i just add cheapo vinegar to the cycle and it gets the smell out, and solid things get the vinegar and water treatment.