The only thing about the thermacells, besides the video I watched where it didn't work for a guy (you could see the mosquitos) is the cost. The cost of it is not the bad part, but the cost to continuously use it. For one butane cartridge and 3 pads, you are talking about $7 or so... and that's only for 12 hours. And if there are more than 1 of you, then you need one for everyone or everyone stays within a 15' radius. So you are spending $7/day per person..for a week long trip, that gets pretty expensive...think we will try the fans (yes I know they cost a good bit too, but they will be used over and over....no more costs) and probably pick uo some skeeter beater...