I have just discovered a whole ecosystem in my mini green house (read: 4 shelves with plastic covering). there are tons of white fruit flies, spiders eating the fruit flies, some other kind of weird flying insect, I think babies of that insect and regular house flies (that is all I saw right now). it is kind of fascinating, kind of gross. do you think that they are hurting my plants in there? I have a few tomatoes, peppers, marigolds and begonias, they are all just waiting for me to plant them. they don't seem to be harmed? I just never expected that many bugs to accumulate at the top of the plastic.