some of the soils have the white and black fly eggs in them and will infect a grow room. I had a batch of miracle grow from the local hardware store that had some of the white flies in it. Luckily, they are pretty harmless and can be gotten rid of very easily by hanging a pest strip or two in the room. There are sprays and oils that can help protect against the more harmful bugs like spider mites, but I would be very leery of using any of this stuff on such young plants for something as harmless as a white fly.

Emmie