Just for the record, there are two different products marketed by Scent Shield. One is "No Stinkin Ticks" which contains .5% Permethrin. The other is "No Stinkin Bugs" which contains 23.75% DEET plus some synergistic products. In my trials they both worked fairly well for their intended purposes. There are several Permanone (generally Permethrin) products labeled for clothes application that last quite awhile and work well. Pyrethrin is a botanical insecticide derived from certain flowers (mostly specific varieties of mums). The Thermacell device worked very well when tested. I found no odor / scare issues with deer utilizing any of the above tested products.