For me, chigger bites are nearly unbearable. Once when a kid, I got sick and passed out in a wild blackberry thicket (picking berries). Had to lie there a while until I could walk back to the car. I was literally covered in chiggers; you can't imagine what I went through. Evidently my immune response to these critters is either too good or not very good at all! That's been 40 years ago and I still remember vividly....