UK outdoor grow inside polythene, few queries

Hi every1,
just wana say I love this site, its helped me a lot!!

Ok, I decided to grow some auto flowering strains outdoors, kind of as an experiment as Ive never grown outdoors before. And even if I get around 5,6,7 grams per plant Il be happy as the weed were Im at is SHIT. and way too expensive.
My spot is very secluded in the middle of a very large plot of 8-10ft trees, and no one ever goes there. My seedlings are 7 days old, and 2 days ago I built a quick polythene tent to keep them dry in the unpredictable uk weather and put them inside.
I went back to water, and inside it was buzzing with flies. :wtf:

Are these a problem and should I take any measures to get them out?
Like insect repellent or anything?

cheers for any help.
much appreciated :smokin:

put a glass of wine inside the tent, they enjoy the smell and it kills them....

any details on the flies? if its white flies then it could be a serious problem, if its just commen household flies they normally wont do damage but its a good thing to keep your eye on

yea their just normal house flies.
im gna try some fly and insect repellant, though might try the wine trick first :cool:

anyone else tried it?