Just like all others stated provent a mite. It is the best!!!!! I have never had this problem but personally would keep her on white papertowels. You can see stuff better. Again...never did this but someone told me....make sure that you treat the cage and that you get especially up on the top ridge...this is where they lay their eggs. Also...a little known fact for me that just adds to what a pain in the butt they are. They just reproduce on their own. Doesn't need two to tango...they can have them all by themselves....ugh!!!