What to know before giving that baggie a second life!
I’ll be the first to admit I use a lot of resealable plastic bags—especially for storing leftovers, packing snacks, or prepping meals for the week. But with more of us trying to cut back on waste and be a bit more mindful of how we use plastic, the question often pops up: Can you actually reuse those freezer and sandwich bags safely? The short answer is yes—sometimes. But there are a few important things to keep in mind.
When it’s totally fine to reuse them
If your bag held dry foods like crackers, cookies, sandwiches, or even nuts, it’s usually safe to rinse it out and use it again. The key is that the food inside wasn’t messy, oily, or allergen-heavy. As long as the bag still looks clean and intact, there’s no reason you can’t wash and reuse it a few times.
When it’s better to just toss it
You should never reuse a bag that held raw meat, seafood, or eggs. Even a good wash might not get rid of the bacteria completely, and the risk just isn’t worth it. The same goes for bags that carried nuts, sesame, or any other major allergens—especially if you’re using the bag to pack food for someone with sensitivities.
Also, if the bag looks cloudy, has any holes or tears, or smells a little off—even after washing—it’s time to let it go. Mold or leftover food residue is a no-no.
Read more: Easy zero-waste cooking tips
How to wash them properly
A quick rinse won’t cut it. Use warm, soapy water and give the bag a proper clean—especially around the seams where food can get stuck. Don’t turn the bag inside out though, as this can stretch or weaken it. Once it’s clean, let it air dry fully before putting anything back in. A dish rack or a chopstick propped inside works surprisingly well.
How many times can you reuse one?
That really depends on the quality of the bag and how you’re using it. Some bags hold up for several washes while others start to break down after just a few uses. Give it a once-over after each wash—if it’s still in good shape, go ahead and reuse. If not, recycle it (if your area allows) or toss it.
Reusing plastic bags is a small but smart step toward reducing kitchen waste, but food safety should always come first. Use your judgment, give them a good clean, and when in doubt, don’t reuse—especially when dealing with raw proteins or allergens. And if you’re looking for a longer-lasting option, reusable silicone bags are a great swap.
ALSO SEE: Is it safe to reuse oil & what signs indicate it’s time to throw it out?
Is it safe to reuse oil & what signs indicate that its time to throw it out?
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