So to River City, as a Former member of missouri's irregulars, then a stint of redistributing money to those in need from retrobates like banks and railroads, I found time to play an interesting role playing game where I pretend to be a scientist in 21st century America, living in an area called the suburbs, mowing the yard (lately have been rolling ones on my d20 because i am mowing all the time!). So this scientist has done some work in the pesticide field. Get a treatment with an active ingredient that ends in -thrin. Permethrin, cypermethrin, etc. follow application directions, but probably they will have you treat the outside of your clothes and let them dry before putting them on. The clip on items for your belt work great if you are not moving much.
Any of the thrins are derived/synthethics from chrysanthemums, the flowers have been used for several thousand years to ward off ticks, fleas, etc. You can link the Chinese Chrysanthemum festival to fighting off the plague, where it traveled west. Napoleon's troops carried Chrysanthemum powder. Plant them in your yard if you have a tick problem.