Light bulb zappers sound like they're working oh so great, but mosquitoes really aren't drawn to them. One solution is to use LP powered mosquito traps. Using a combination of CO2, heat & scent attractant, they're a backyard black hole in the mosquito event horizon.
Mosquito Trap Review
I haven't run across a lot of people who use one of these. My one experience was several evenings of patio campfires in a buggy residential area north of Anchorage, AK. It was amazingly free of the little buggers. I'd think that the trap running for a fair while (days?) really helps. Skeeters tend not to migrate long distances during their lifetime -- I've heard figures like a tenth or a quarter mile maximum. This option is worth mentioning. I haven't looked into these for traveling because they are bulky, expensive and my experience hasn't suggested I'd use it very often. We sure have gotten used to managing skeets well enough in other ways.