They really don't want you to treat your campsite or tent at all (mostly because folks think spraying Off on stuff is a good deterrent) but I stashed a gallon along with me. Sprayed around base of tent (canvas scout type) and along the seams. Also sprayed the boy and my bug shelters (single man tent basically, keeps the critters out), never had the first mosquito survive if they got inside. Had a bunch of ants get in my backpack, had left a pack of nabs in there overnight and it got knocked to the ground. Couple of sprays and an hour later, no more ants.

Bought enough to make about 5 gallons of 0.5% off of Amazon. Treat everything of mine now before camping and let it dry before packing. Good stuff!