Gizmodo's Brent Rose reviews the TheraPik, a $13, ugly, plasticky bug-bite zapper that actually works really well. It heats up your mosquito (and other critter) bites until the venom's proteins break down, and the itching and swelling disappear.
You put the tip of the Therapik onto your bug bite, then you press and hold down the button. The tip uses light to heat the bite up. You hold it there for as long as you can take it, up to a minute. The burning sensation gets pretty intense after 30 seconds or so.
The Best Part
It actually works! Mosquito bites (the only thing we tested it with) stopped itching within a few seconds of taking it off, and in most cases they never itched again. We are officially stunned.