I’ve used one of these for years while fishing in the Everglades, one of the worst mosquito environments in the world, and it just plain works. I previously used DEET (a known carcinogen), skin-so-soft, dryer sheets, candles, coils, noise generators and other repellents but threw them all away when this showed up. It gives you a 15 foot “bubble” of protection using a butane cartridge to heat a pad of repellent. Riding in the boat does tend to blow out the pilot light in the device but a few clicks of the starter and it’s going again. They have models specifically for hunters (no game alarming scent) and lanterns for your back yard.