Well I have one for ya, my normal ball female went a whole 1 1/2 months without eating. fresh killed, live, african soft fur, nothing. Gerbil, success!!! African soft fur tossed around in shavings from gerbil tank, success!!!. A little thump on the head because gerbils are rather nasty and take nasty bites and you are good to go. I don't like thump'n them either, but I gotta do what I gotta do. Good luck!!!