I’m not going to ask why you had lab rats in a maze. I’m not even going to ask why you thought it’d be a good idea to squirt them with cat pee. I DO want to know why you had a copius amount of cat pee just lying around! The bloody hell!
Even if this is meant to be a joke, it is believable given that a rodent would probably instructively try to find shelter as fast as possible if it smelled the presence of a cat.