There are only merch codes available for Pet Simulator 99! currently. It's also worth nothing you can only redeem codes when using a desktop. If you do have a merch code, follow these steps to ...

Find out here if there are any Roblox Pet Simulator 99 codes you can use to get free stuff in and out of the game.

There are no active codes in Pet Simulator 99 since the codes are merch-based and can only be discovered after purchasing a merchandise item from the Big Games' official website.