I buy Sunny's dry food (Blue Buffalo puppy) at petsmart. I get her canned food (Wellness puppy) at Agway.

Moon and Bean have always eaten purina special urinary tract formula to prevent crystal blockages and I can get that in the grocery store. (I didn't know about all the "better" foods for cats way back when but they are both doing so well on it, I didn't want to change them once I became obsessed with my pets health ).