Can't wait.

I just use Imid, (Bayer), in the soil for seedlings .
I water it into the soil before I germinate.
That kills any pre-existing pests.

Then I cover the soil surface with dryer sheets to prevent random "flyers" from laying eggs.
Have not had fungus gnats, root aphids or white fly for over a year now.
The dryer sheets won't help much if you are already infested.
But they will keep you from getting infested in the first place.

So, what's your evil plan?

Aloha,
Weeze