Watching the expiration dates ends up being one of the most important aspects to supplementing your frogs. Most supplements have a shelf life after the seal is broken of 6 months. Sometime between 4 - 6 months you should have warning bells going off in your head and order replacements. You will end up throwing away 1/2 to 3/4 of the jars because we simply cant dust enough food to use it all in 6 months, but it is he nature of the beast.