So is cat saliva, Dog Dander, mose urine, some are allergic to the Mouse hair, I'm allergic to Cat Saliva, Dog dander...but that didn't stop my parents and me when I was younger to have cats and dogs. It just ment That I had to keep them clean and well groomed. So as long as you keep those mice cages clean and spot clean. Then you shouldn'rt have a problem. just my .02