Cat parents: Petco (and possibly Petsmart) lets you refill your old sophresh kitty litter tubs at a discounted price as opposed to buying another tub! : r/ZeroWaste
Petco offers discounted price when you bring your empty tub of their brand litter back. : r/ZeroWaste
Arm and Hammer™ Cat Litter, Pet Toothpaste & More | PetSmart