Its very woodsy here in the South and Ive been finding their corpses laying ontop of my covers in the morning.
I happen to have been taking Ivermectin horsepaste for the past 2 weeks and I'm pretty sure they're dying when they bite me. Also, their bites end up being no more than a red dot. No infection, no itch, nothing. They used to turn into painful, solid, infected knots that would last 3 months or more.
Ivermectin appears to kill the original perp, then kills the parasites and viruses they pass on to you.
Its a good pre-emptive measure that I have now seen real-world results with my own eyes.
Rebrand it as the cure for bedbugs, and make a fortune.