I wouldn't advice buying that
food bowl that you posted babygirlleelee. I bought that bowl a couple of weeks ago thinking its great to not have to keep filling their food bowl and they never go hungry. But, the fact is if your ferrets dig then they can keep digging because the food will just rush down as they dig and you waste even more food. I still have it but i will probably never use it until they are older or maybe never then. I have the bowl that fstybrat posted about and it is great!
My ferrets were digging in the food constantly until i bought that bowl. Now as long as you don't fill up the bowl just fill it halfway then they have a real hard time getting the food out. If they do get the food out which mine do time to time when i overfill it, then just don't fill the bowl up until they eat the food they dumped out. Mine usually do while i'm at the house and as soon as they do or out of food then i give them more.