I grew up on the Canadian prairies, I know about mosquitoes. Every survival kit I have, car, airplane, hiking, etc. all have mosquitoe repellant in them. Being stuck in the bush without would be living hell. Some early settlers on the prairies were driven literally insane by the little beasties. I prefer a brand called Muskoil, it has as much DEET as is legally allowed and it works great...Deep Woods Off is pretty good too.