Permithrin is sold in the camping section at Wally World...Repel is the name it is sold under...I buy Sawyer, myself....it is NOT Deet...it is made to be sprayed on clothing which then must dry completely...it is excellent against mosquitoes...it's not that they land on the material and die...they just don't land...I spray my tarps, hammocks, clothing and hats every spring...OUTSIDE! It is very effective...there is no odor and it does not damage plastic like Deet can.