Petco currently has 50% off Your 1st Repeat Delivery Order on brands Hill’s, Blue Buffalo, Caniade, WholeHearted, Gentle Giants, and Halo. I did the Blue Buffalo repeat delivery last month and it is still working for me even with the same product. I read that it resets on new promotion, but not too sure so ymmv.
There is also a $50 Petco giftcard for $40 deal on Amazon currently too for folks that want to stack.
https://www.petco.com/shop/en/pet…very-order