So, my GF lives in an apartment that is actually the top floor of a house, that was converted into an apartment. The house is probably 50+ years old. Lately there seems to be a ton of fruit flies in her place. She noticed them, and promptly made sure she didn't leave any fruit out. She also made sure the garbage was closed up, and that no food items were sitting out. Also, her place is usually very clean and tidy, and she vacuums and dusts every week. She can't seem to get rid of them? Any suggestions? 😕