
Bug sprays may not have an expiration date, but they lose effectiveness over time due to the breakdown of active ingredients.


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As the weather warms, mosquitoes and other insects become a nuisance that often causes you to take out your bug spray. But before spraying, you may wonder: Does bug spray expire? Here, several experts explain how to tell if last year's repellent is still effective.

Does Bug Spray Expire? Here's How to Know If Last Year's Repellent Is Still Effective

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Does Bug Spray Expire? How to Tell If It's Still Effective
