I do a few things to prepare for an area I know will be bad. First, I get a can of Permethrin which is the treatment for clothing. you just spray it on any article of clothing you want, it's the same stuff as BuzzOff but only lasts 6-7 washings. I generally will do a long sleeve shirt and hat. My favorite spray is Ultrathon. made by 3M and developed by the military back in the day for jungle troops, low absorption for long exposure. works great. those two things usually do a good job.
last year on Deso someone brought a Thermacell. I was skeptical but they really work well. not really something for moving around but we put one on one of the kitchen tables and it cleared the whole area. takes a little butane cartridge to heat a pad with some chemical in it expelling it into the air.
I've heard good things about some of the new ones like SkinSmart from Coleman but haven't tested them in really bad areas. Those little personal blue fan things with the pad in them, can't remember who makes them, actually work ok too if your not moving a whole lot and it's not windy. like hanging it from a chair.
the permethrin and ultrathon generally work for me though and don't like wearing a head net unless it's epically bad.