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Not officially but do check it visually to see if it is fresh. Fruit/seed mixes should smell sweet. If a large quantity of food is purchased (commercial hamster block or other), take a little out that you will use in a few weeks and put the rest in the refrigerator to maintain freshness.

Also, try not to overfeed your hamster so that it eats what you provide it within 1-2 days. 4 blocks a day is sufficient plus an occasional treat.

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14y ago

What else can I help you with?