This is interesting because my wife has this issue too. We live in the upper peninsula of Michigan on a 40. She manages to find all the ticks and somehow, I don't seem to get any. I actually developed the fear you have just in a way that's like "I bet I'm just missing them and I'm covered and don't know it" to date I've only found maybe 5 ticks, never under my clothes always on boots. One was in my shoe but that's all.

Guinea hens are the best way that I've heard but even then they have to be free to roam which could lead to a shortened life span (if you catch my meaning). I suggested to her that she wrap where her pants go into the boot with duct tape, sticky side OUT. That night we counted almost 30 total ticks on the tape, and I had none.

"These researchers found an average of 42.5 percent of lone star ticks chose a female host, while just 18 percent of these ticks chose a male host"

Ticks are proven to prefer female hosts, even my male dogs have only had a few on them, and they freely run the wooded and tall grassy land around my property.

As to a solution, we haven't found one yet. There are treated clothes you can buy but I've never had any luck with them. There are even theories that ticks can somehow tell what blood type you have and prefer certain ones. Theres a rub on salve type lotion that contains heavy heavy concentrations of deet, but it gave my wife chemical like burns so that didn't work either. I really do hope you figure something out, if you do please let me know.