Pet Simulator 99 is full of mysterious locked doors, and from the Trading Plaza entrance to the rewarding minigame, there are various things you can find there. One of those doors is unlocked with an Exotic Treasure Hideout Key, but only for a limited time. Once you've exhausted those keys, you'll be looking for more, and that's when you can use the methods we've listed below.

There are mainly two ways to obtain Treasure Hideout Keys in PS99: by dropping the last area keys and by trading:

Treasure Hideout Key is used to unlock Area 159 (Mothership Circuit Board) minigame, Treasure Hideout. Once the game is unlocked, it will remain active for 30 minutes. After that, you have to wait for six hours and get another key to use it again.

In this minigame you have to destroy the breakables to fill the boosted drop rate bar and keep repeating this until the time runs out. While breaking you will find a lot of Enchants, Potions, Consumables, Keys and Buffs, and by reaching the Break Goal multiple times you might even get a Pet, including the Huge Electric Cat. Furthermore, just like the area breakables, you can use your pets and boost items to increase your speed, damage and luck, so use them and get the best drops.