Tiny moths in greenhouse

I've noticed some really tiny moths in my greenhouse, they rise up in a cloud when I disturb them, I'm not sure what they are but I have a sneeky suspician that they are up to no good! Can anyone give me some advise on how to get rid of them, preferably using organic/natural methods.

Thanks

Sounds like Whitefly. Difficult to control. There are insecticides, which you can get at garden centres, but some are not usable on edable crops.

The parasitic wasp called Encarsia can be obtained as a biological control.

Where you have vents in the greenhouse, cover them with a bit of fleece as this will derter flying insects from gaining entry.