Have never tried it on chigger bites; but another old time remedy for bites is old time lye soap. When my kids were small, we kept a bar in the bathroom. All you need to do is wet your finger, rub it on the bar and then on the bite. Believe it or not, I learned of this at Dollywood (in Tennessee) many, many years ago. I was a skeptic but purchased a bar just to see. Well, low and behold, it did work. So now with grandchildren, I still keep a bar on hand. I bought mine at a craft fair, I think.