Hello all, I'm looking at a bottle of 3M Ultrathon insect repellent. The active ingredient is Permethrin at 0.50% and it is for the treatment of clothing and gear. A couple of years ago I noticed that the local feed store had Permethrin in 32oz bottles at a higher concentration. There was a dilution chart on the label that showed how to dilute it to 0.50%. I bought a bottle and have been making my own refill at a fraction of the cost of the 3M or Sawyer. I spray my boots and pants and let it dry. one treatment lasts a long time. 2 ticks last year and 1 this year and we live in prime tick country. The key is tick checking every day too.
Get out and enjoy, Bigfoot Dave, Duluth, MN