Black flies in the tent are not nearly as annoying as mosquitos - they just fly up to the peak of the tent and sit there. But mosquitos bite indoors - even one live mosquito in a tent is too many to permit a restful night.
I was waiting for someone to bring this up, there a significant differences in how to deal with one type of bug vs another type.
Since I frequently am using a floorless shelter vs a sealed tent I pretty much always have some bug issues. Black flies are easy to deal with, I set up my shelter then go on a bug kill with just a finger tip, they collect in whatever part of the shelter has the most sunlight so it's pretty easy. even if there are some remaining they are more interested in getting out than bothering the occupant. When it's dark they just sit where they are and wait for you to turn on a headlamp or other light source that's when they may start to pester you. I usually write notes late at night, the light reflecting off my notebook attracts them so many of my notebooks contain quite a few squished BF's. Once the lights sources are out they just find a quite corner to hang out until sunrise.
Mosquitoes on the other hand are just totally annoying, in my experience pic coils, which are a nerve agent only disable them, it takes sustained exposure to actually kill them so if you burn a small piece of coil it may seem you have done the job but when the coil is no longer burning they will revive and attack during the night.
Inside my shelter I now carry a standard type of hanging bed net designed hang over your sleeping area (normally used to prevent contracting Malaria, West Nile etc. When using a "normal" tent it's all about reducing the amount of entry/exits, getting to be an expert with the zippers and never forgetting to have your pee bottle with you so there is no need to do an in/out during the night.
When I'm using a standard tent, I set it up, accumulate everything I will need, open the zip as little as possible, toss everything inside and then when it's sleepy time making one quick entry and never leaving until the morning. If you do need to to go in/out DO NOT turn on your headlamp, having it on will no doubt bring in a new swarm of bugs.
In the shelter I have in the past used those cheapo electrified fly swatters, they are reasonably effective and provide hours of entertainment. Some of the newer electronic bug killers also work well from what I hear.
Bugs on the George River 2010
