I try to not use any product that is “highly toxic to aquatic life”, especially on/near water.
http://www.epestsupply.com/images/Products/labels/ThermaCELLPatioLanternMsds.pdf
If biting flies are you main nemesis, search blue solo cup sticky traps. Works incredibly well with zero toxicity. Last summer at camp was hell until I set up six cups for as many acres. By the next weekend the difference was incredible. I plan on getting a blue hard hat to sticky up for berry picking. If water levels remain high it could be another bad year.