Many people throw away plastic zip-top bags after using them once, but some can actually be washed and reused safely. Bags that have held dry snacks, sandwiches, crackers, cereal, or clean fruits and vegetables are generally good candidates. You can also reuse them for storing craft supplies, small household items, toiletries, or office accessories. Reusing suitable bags can help reduce household waste and save money.

However, not every plastic bag should be reused for food. Bags that have contained raw meat, poultry, fish, or seafood should be thrown away because harmful bacteria can remain and create a risk of cross-contamination. The same applies to bags that held greasy foods, heavy sauces, or anything that leaves a strong smell or stubborn residue. If a bag is torn, cloudy, stretched, stained, or no longer closes properly, it is time to replace it.

Cleaning reusable bags properly is important. Turn the bag inside out if possible, then wash both sides thoroughly with hot, soapy water. Rinse it well to remove any remaining soap or food particles. Avoid using bags that cannot be cleaned properly, especially around the corners and zipper area, where residue can collect.

Finally, let the bag dry completely before storing it. Prop it open upside down on a clean drying rack or another suitable surface so air can circulate inside. Never put a damp bag away, as trapped moisture can encourage mold and bacterial growth. With a little care, suitable zip-top bags can serve more than once!