I have used the EX90 many times and it has definitely helped keep mosquitos away at campsites. Unfortunately, the Power On button turns on so easily when the unit is placed in a backpack. It stinks having backpacked for several hours only to get to camp, and pull the unit out of the pack and see that it has been on for several hours. I wish the switch was a slide switch, or one that required a long press, or 3-5 fast presses to turn on. Or maybe a lock off feature.
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