other then there being an expiration date, when it gos bad can you tell? does its smell different or "bad" when its gone bad? well they not want to eat it or some thing? just wondering because ive never used with it before, and i'm going to with the next one i get.
thank you for taking the time to read this! 
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1. Leopard Gecko: Larry
3. Cats: Midnight, Tiger & Fluffy
rip. Crestie: Tuki


