"Small, reusable vacuum pump helps draw venom from below your skin in 1 quick motion; pump is easy to use with 1 hand Comes with 4 different sized plastic cups for suction to cover various sized stings or bites Effectiveness of the Extractor varies with the location of the bite; the Extractor most effectively retrieves venom from extremities and areas of the body outside muscle areas Sawyer Extractor kit includes pump, alcohol prep pads, adhesive bandages, sting care wipes, razor (for hair removal), and instruction manual Made in USA.
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The bug bite thing is much cheaper, as you can imagine, but they work the same way.