I have little flies that like to hang around my plants. They usually come bursting from the soil ad fly around when the plants are watered. I have tried letting the soil completely dry, but when the plants are re-watered they always make a comeback. I have been trying to get rid of them with some mosquito spray I have (that contains: Ethyl Alcohol, Deet, Aloe, and fragrance) around the plants like on the outside of the pots, but not directly on the plants to try and deter them. I don't think the spray is helping much. I tried the cup of vinegar with the plastic wrap with holes (supposed to attract them in but can't get out and drown) and I only catch a few. I read that some people wash the plant in warm water with mild dish soap and use new soil. My plants are already weakened by the flies and I do not think that they can't handle going through something like that. And, most likely, the flies would just eventually come back in my case. I read that these flies feed on the roots of the plants, and I believe the plants are beginning to really be burdened by them. I need help. Is there anything that I can buy or do to eliminate these annoying flies? I am really desperate!