This mosquito bite-clicker was given to me years ago by a friend. He suffers like me very strongly insect bites, allergic reactions, when the stitches swell excessively and ever need to decay again. He wears the clicker during mosquito time permanently with him. I could believe that the thing should help it hardly. I had tried all sorts of remedies to ward off mosquitoes and to treat stings in the past. Fragrances (repellents) have as little helped as ointments or tinctures for treatment. Now I use successfully the Zapper Click: 5 to 10 times and click the stitch is forgotten. If in doubt, you can click more often, too, which does not hurt. I just ordered three new Zapper Clicks: My First has determined after five years soon fulfilled his service; a second, I would like to take bike rides have always with you, which comes in the touring bag. And the third is intended for good friends who do not yet have.