I spray down when I leave the truck, again when I get to my stand, again when I get in my stand, again when I think I might need to, again just in case, again when I fart, again........ I tend to use A LOT of the stuff. I buy the large bottles every year when they close them out at wally world. I get as many as I can. last year I used 6 of the large bottles. This year I have 10 out in the shop. I expect to use most of that up this season.