Because I have 8 cats, I try to find the best deals on canned food, litter and dry food. PetSmart has a great deal on Friskies canned food. $.40/can!! I can get a case for $9.90, and Wilderness Blue for $31.00 for a large bag, regularly $34.00. Also, they have a huge bucket of Tidy Cat (38 lbs for $11.45). I'll use PetSmart for all those deals till the sale is over. Then I go back to Pet Supplies Plus. Out of the three, PSP is the one with the cheaper, everyday prices.