I’ve treated my hunting clothing with permethrin when we were going to an area that was known to have an extremely heavy tick population. We had a spray bottle of the stuff, and did a thick coating all over our outer gear, and then allowed it to dry. Permethrin is fairly low toxicity for humans & dogs, but absolutely killer for mosquitoes and ticks. Worked like a charm!
Seriously though. Snapper has saved my bacon so many times, I don’t even know how I operated before it.