This little contraption is magic! I was skeptical at first but I’m a firm believer now. It uses suction to suck out the saliva from a mosquito bite! The saliva is what causes the irritation. It has changed my summer. When I go outside to play with Maggie I will come in with at least 5 mosquito bites. Every day. This has stopped them from itching. It’s insane! If you suffer from itchy, terrible mosquito bites you need this! It didn’t work on older bites but I use it on new ones and it works wonders. It also works on other bites, but I haven’t tried it! I bet it would work on those gnat bites, too! I don’t even wear bug spray anymore and I used to wear it daily!