Several years ago I was rafting through an isolated gorge that separates Mexico and Guatemala…at least several days away from the nearest medical facilities. We carried The Extractor for snake bites. A friend was bitten by a flying bug. Her arm immediately began to swell up. She was in intense, burning pain. We attached the extractor over the bite, with its largest cup…Several drops of foul brown liquid were drawn from her arm. Almost immediately her pain dissipated. I have used this tool many times since then on simple bee stings on my children — their pain leaves almost immediately. I have never seen it used on a snake bite but it appears that it would work great. It is one of the best tools I have ever used. I try to keep one around all the time.