Gift Cards: Up to 5 PetSmart gift cards can be used per online order. If the gift card does not cover the full purchase, another payment method is required. Autoship: PetSmart gift cards cannot be used for Autoship orders. Afterpay: Afterpay is available online and at participating PetSmart stores; in-store payment uses the Afterpay Card through Apple Pay or Google Pay. Payment Timing: Credit cards are generally charged when products ship, although some debit cards may show an authorization when the order is placed.