Had 'em quite a lot over the 35+ years since moving to Texas. They leave a saliva tube which causes the immune response which causes the itching.

Got no answers, I just scratch 'em bloody, prob'ly scratching the tube out.

Chiggers and Fire Ants, just part of living down South. Neither are a problem up north.

"...if the gentlemen of Virginia shall send us a dozen of their sons, we would take great care in their education, instruct them in all we know, and make men of them." Canasatego 1744