Free shipping on orders $35+. Max discount of $20 Choose repeat delivery at checkout for discount. Also, it doesn’t have to be your "first" repeat delivery in order for it to work. It resets on every new promotion. Please correct if I am wrong about this because it has always worked for me.
Note: The Petco website is awful. Make sure to check the percent off discount at checkout when you choose repeat delivery. For example some products show 35%, but when you click on it, it says 30%. During checkout it will be 35%. Another example is the Natural Balance brand which doesn’t show any discount before clicking on the product, but during checkout it shows 35%.
Works on treats too if you need fillers for max discount or free shipping.
https://www.petco.com/shop/en/pet…e-products