One of my friends today introduced me to Orange Guard, an insecticide / insect repellent that's pretty environmentally friendly and actually smells nice. A few years back, ants attacked my apartment... my roommate and I ended up buying insecticides and ant traps. I really was reluctant to have to turn to that because I don't like the idea of having toxic chemicals around the house. If only I had known about Orange Guard back then.
Apparently the key component is orange peel oil, which repels and kills insects. Next time I have an insect problem, I'm definitely going to give this stuff a shot.