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Stephanie George I use this if I've forgotten to put on the spray and it stops the itching and swelling right away. As with the spray, I keep a couple of them by the door and on the porch and have them out for friends when we have our outside gatherings. No worries about safety with any of the products!
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Mark I don’t how, but this stuff works. The sooner you put it on a mosquito bite, the better. I keep one in my pocket. If I get bit and I put it on right away, I never feel it later.