Re: a/c window unit full of mosquitoes
If you've got a mosquito farm inside the unit, then it sounds like it's not draining properly. Installing a weep hole or two to keep standing water out will all but stop them infiltrating from this area. Mosquitoes don't hunt for places to get inside the house, they're looking for food (biting you and your pets ) and a place to breed (standing, stagnant water ). Eliminating breeding grounds will go a long way to stopping the problem.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!