Excellent post above by NityOwl. I follow the same system when treating my clothes, and tent netting. I also spray it on my car camping, scout camp bags as well. He said he uses a 3% solution, I use a 5% solution and when I am done I pour it around the outside of the house, spray my windows and doors and anywhere else bugs can get into the house. Works great at keeping the scorpions outside where they belong and not crawling on the walls inside my house.