Excuse me, but you got it all wrong. Chiggers actually use their hind legs to borrow into your skin. That's why they are always at tight binding points of your clothing That's why they never touch your wife, because she doesn't wear tight clothing so chiggers don't have anything to press against. That's why painting the the red bump with fingernail polish stops the pain and itch. The nail polish suffocates them.
I grew up in Georgia and Alabama so I know all about these pests.
Nail polish.
Back in the 60’s most women were too smart to buy clear nail polish.
My grandmother treated my chigger “bites” with whatever color she had and didn’t like.
Pretty odd to have red nail polish dotted on your private areas. It stopped the itching for a while. If you could package and target drop chiggers on an enemy force they would surrender..