"This has worked wonders for odors for my fuzzies. I live in a very small apartment, and the strong ferret odor becomes overpowering very quickly without very frequent cleaning. A few tips: This changes the texture of the water, and I don't recommend leaving the water up for more than a day, because it seems to turn cloudy. So I don't fill up the bottles all the way and only add a squirt or two, that way, I'm not wasting any. Also, I have read that some ferrets have tummy problems with this, so pay attention to them. If they seem to be having tummy pains, you might want to try stopping this for a while and see if it's the cause. Mine haven't had any problems, though."