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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 applying, you may wonder: Does bug spray expire? Here, several experts explain how to tell if last year's repellent is still effective.
If you still have a stray bottle or two at home from last summer, you may be wondering: Does bug spray expire? Though insect repellent may not have a listed expiration date, the summer...
There is no one-size-fits-all answer here, but the consensus is that bug sprays have a shelf life of about three years. At that point, you should probably throw them out — not because...
Bug spray effectiveness primarily depends on its active ingredients, like DEET, Picaridin and IR3535. DEET and Picaridin have an almost infinite shelf life while IR3535 lasts around two years. Most brands recommend discarding bug spray after three years to ensure effectiveness.
Yes, mosquito repellents do expire. Just like any other product, mosquito repellents have a shelf life and can lose their effectiveness over time. The active ingredients in these repellents start to break down, reducing their ability to repel mosquitoes effectively.
Fortunately, the good news is that while most bug sprays and insect repellants do expire, it takes a very long time. And the expiration date — if there is one on the bottle — doesn't really mean much other than "it may not work quite as well.
DEET-based insect repellents, which are the most common type of repellents sold in the United States, do not have expiration dates because DEET lasts indefinitely, according to DEETOnline.org. Because repellents do not become hazardous over time, the federal government does not require manufacturers to print ...