I was VERYYYY skeptical as I usually am when making a purchase like this. However, it truly gave my family instant relief. My 7 yo son gets welt like bug bites so I bought this prior to going to the beach for vacation (where he usually suffers the worst) it stopped the itching immediately and swelling went down within 30 mins. My 3 yo even got what I suspect was a spider bite on her shoulder and it was gone. You do have to be sure not to suck all the way for little ones and I made that mistake the first time I used it on my 3 yo. It did leave a mark on her like a little circle hickie but the bite was gone!!! I was skeptical even after that so every time someone in the house got a bite I whipped it out and everyone said the same thing! I used it on probably 7 people through the week:) highly recommend!