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Chemical Defense

How Often Should I Replace My Canister of Pepper Spray?

There is no "expiration" date on pepper spray itself since capsaicin is does not deteriorate but the propellant may deteriorate. Manufacturers recommend test firing a canister one-half a second (0.5 seconds) every 3 months. This would mean you may need to purchase a new canister every couple of years. Canisters are designed using two soft rubber gaskets. Over time, some pressure may leak past these gaskets rendering the spray less effective. Since effectiveness is of utmost importance, it is recommended that canisters be replaced every three years. 

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