Hi Ela, Glad the bowl arrived! It sounds like it is foiling your boys' attempts to dig out the food, should save you a fortune huh? I know I could not survive as a shelter if not for these bowls to prevent the wasting of food. Not to worry, I have all the surplus stock of these under lock and key to prevent any Texas FLO agents from seizing and destroying them. Kisses to your boys. Trish Director, Ferrets First Rescue & Shelter [Posted in FML issue 1792]