Smell...?

Grady is a good cat. The worst he's ever done to the house is barf, and that is easy to clean. Recently I've been smelling this cat-like smell, and I have no idea where it is exactly. His litterbox is taken care of, so it's not like it's there. It would be more accurate to say it's in the hallway somewhere, but it can't be pinpointed.

The black light isn't as helpful as you'd think. The previous owners had the carpets professionally cleaned, but old pet stains will always leave a mark that a black light can find. Determining which blotch is recent is easier said than done, and I'm not eager to crawl on the floor and *sniff* for a fucking cat smell.

Like I said, Grady is a good cat. He doesn't climb up on countertops, sharpen his claws anywhere he shouldn't, or do his business outside the litterbox. If anyone has an idea what else I should be doing to locate the source of this smell, please feel free to share. There are several things that smell like cat pee to me. Two of them are juniper and passion fruit. Neither of those things are in my hallway.

It may be time to just bite the bullet and re-carpet the entire house.