I dont know if this is known but i just tried something and it worked, I had perkohlic which i had only one of so when i eventually went down i had an idea to see if i could keep it after using it.


All i did was when i went down I quickly pressed the middle button pressed start on the game and then quit the whole game off, then loaded the game back up and i still had all my gobblegums as if i had never used them. i also kept all the xp too my ranked stayed for killing and surviving zombies pretty handy glitch if you only have one perkahoilic


Steps for simpleness :

step 1 : press middle button
step 2 : press start and quit game
step 3 : load the game back up and hop into another game and you'll be able to use it again