Detering effects of coffee aroma Does coffee aroma have a detering effect on some insects, like flies, mosquitos etc.?

Are there any researches on how the 'house' insects are reacting on coffee aroma?
Though I can't find any recent evidence, it seems that research at one time shows that caffeine can be used as an insecticide. However, due to the fact that natural light exposure degrades caffeine, it probably wouldn't make for a very good long-term solution.