I like these guys a lot.They also carry CC and APD hay.Another great vet in case one of those doctors is not available, is any of the doctors at:
Creve Coeur Animal Hospital
12550 Olive Blvd.
Creve Coeur, MO 63141
They have an emergency number if you need to talk to one of the vets while they are closed.
Still good info ! <3Noah's Ark Animal Hospital
1003 North Fairview Road
Columbia, MO 65203-4663
They are very good and chin care is priced reasonably. Usually the same price as other pocket pets(Hamsters, Guini Pigs, etc.). They are very nice and know what they are doing around chins.