That’s a question that only you can answer. Most vacuum sealer manufacturers claim that the process keeps food fresh up to 5 times longer. If you like to purchase food in bulk, a vacuum sealer can keep fruits, veggies, meats, poultry, grains, and other foods from deteriorating as rapidly, likely reducing food waste. With frozen food, vacuum sealing mitigates freezer burn, maintaining freshness for longer, in addition to keeping it from spoiling.