PetSmart's autoship programme is the headline offer here, with 25% off your first order plus 5% off all recurring orders. This deal makes the most sense if you plan to restock pet essentials regularly, since the ongoing 5% discount keeps adding up over time.
For a one-time small purchase under $49, the $15 off top brands deal will save you the most money, provided your basket reaches that threshold. If you are spending less than that, neither offer applies, so consider signing up to the newsletter for access to special promotions.
For a one-time purchase over $49, you have two options to compare. The $15 off top brands deal gives a fixed saving, while free shipping eliminates delivery costs—whichever saves more depends on what the shipping fee would have been. Calculate both at checkout and go with the larger saving.
For collars, harnesses or leashes, the buy one, get one 50% off deal on dog and cat collars, harnesses and leashes beats any other offer on these items.
For cat litter, you have competing deals. If you are buying Exquisicat litter, take the buy one, get one 20% off deal. If you are buying other selected cat litter brands, the buy one, get 2nd 20% off offer applies instead. Check which products you are purchasing and pick the offer that covers them.
For Stella & Chewy's dog food and toppers, the buy one, get 2nd 40% off promotion on selected items gives a stronger discount than general offers.
If you plan to set up autoship, the maths shifts in the programme's favour over time. Your first order gets 25% off, your second gets 20% off, your third gets 10% off, and every order after that gets 5% off. For regular pet supply shopping, this cumulative saving will outpace a one-time $15 or free shipping deal within a few orders.
Remember that only one offer applies at checkout, so compare the saving each would give you on your specific basket and select whichever produces the larger discount.