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Yeah, but also bear in mind that things that are elements or simple compounds generally don't expire, or at least they don't anytime close to the expiry date listed. Iodine, for example, and salt never goes bad. They just have to list those things because of regulations. Electrolytes are also often good way past the date, depending upon the base they are in, and wormers are often good for at least a year past the date. Vets can give rules of thumb for what to look for in certain expired meds if they are honest and not looking to make a buck. I've had powdered horse electrolytes and Banamine that have been good waaaay past the expiration dates. When you're dealing with expensive stuff that doesn't get used often, if ever, the savvy hobbyist should learn these things.