Petco will accept most items back as long as they're returned within 30 days and in a passable condition. In-store returns must be accompanied by a return receipt or an order confirmation of some kind. Rest assured Petco has a return policy that's favorable to the customer so feel free to contact customer support and ask them if your item is valid for return or not, For more information on Petco's item return policy, head on over to the Petco website.