Indoor mosquito killers

http://www.diyhappy.com/quick-and-dirty-mosquito-trap/

May not work on your mosquitos, but it's very cheap to test out. If your mosquitos are not tracking you down by CO2 exhalations, you can try a skeeterbag instead - looks very cheap to DIY.

http://skeeterbag.com/

Here in southwestern China every local housewares store sells "mosquito racquets" - it looks like a tennis racquet but has a wire mesh grid, a rechargeable battery, a flashlight bulb, and a button that makes a surprisingly loud zapping sound. Get the large surface area of the racquet close to a mosquito, press the button, and you'll hear a rhythmic zapping, and then a surprising sudden louder crack as your nemesis is fried to a crisp. It has the additional benefit of not smearing your purloined blood all over the wall like a rolled-up magazine would.

It's certainly not a passive, no-maintenance trap, but it's quite effective and you get a rush of satisfaction as that little buzzer who's been menacing you while you is abruptly sent to its great reward.

Plenty of varieties offered on Amazon for $5-10.

For clarification, I was looking for something passive that would work in the bedroom while we slept. We ended up buying the Bite Shield, which is a small fan device that has small chemical cartridges that clip on the front. It's not well made, but it does seem to be helping. We may consider giving the skeeterbag a try.

For outdoor use, it seems that the Thermacell is a great solution, we're definitely getting one of those for the backyard.

I place a piece of Mosquito Dunk in a little water (like a saucer for a flowerpot) and make sure there is always water in it. The "house" mosquitos can no longer produce more mosquitos if they lay eggs there. Our population has been reduced to almost zero.

If you are still looking, a bed net works wonders! They are bulky though, but not a problem if you are not travelling with it! Whilst living in Ouagadougou a long time ago my spouse and I had a bed net for the mosquitoes, and a fan for the heat! The fan killed hundreds of mosquitoes every night, so that combination might suit your purposes. The "zapper tennis racquets" are really effective, but it is a pain getting up from time to time to try and kill the little critter buzzing around your ear in the dark! If you have a serious mosquito problem, start with a net!

There are pyrethrum-based net dips that increase the effectiveness of mosquito nets.