I get invaded by small bugs that can get in through the screen or any small opening. The usually only come out at night so I keep the lights inside off after dark and it cuts down on the number that get in. Before I'm ready for bed I will close the windows and door and then turn on one over head light for a few minutes and this attracts them. Then I spray toward the light with a small shot of "Dairy Barn" insect killer, turn off the lights, and go outside for half hour or so. By the time I get in they are all dead, I use a flashlight and open a window or two, and then I jump quickly into bed .