yikes! I would hope that none of them does that, but one never knows. I have all hardwood and no carpet, so I'm hoping that there isn't a secret corner where one is peeing. I know that one of them likes to pee on plastic bags if I leave them out after putting the groceries away. And because of her strange behaviour and the fact I can't really trust her anymore (she's 18 and isn't quite herself anymore), the cats are banned from the bedroom so I know they don't do anything in the bedroom.

I know that the pine pellets themselves have an odor so I think I just need to find a good air neutralizer.