Attack of the gnats....
OK, I clearly have a gnat problem. I knew this, but I only realized the scope of it last night when I pulled my shelves away from the window and saw a virtual city of gnats hanging out on the window pane behind the shelves. This started b/c I used those stupid greenhouse domes when germinating my seeds (never again). Here's what I've tried to get them under control so far:
-Box fan on low blows directly on the seedlings
-I put cinnamon on top of the soil
-I watered with a 25% hydrogen peroxide solution
-I have yellow sticky traps up
-I dusted with "Safer garden dust" (which has BT).*
-I sprayed with Neem.*
* These I did not do to the very young seedlings that don't have true leaves yet: my serrano peppers, king of the north peppers, basil, parsley, and tomato.
Last night I vacuumed every gnat I could find on an around the window. Then I removed the seedlings from the trays and vacuumed those out too. Then I periodically have gone to inspect and hand-crush any gnats I find. The numbers have diminished, but I still find new gnats every time I go back.
One tray of plants is just a few days from being finished hardening off and getting transplanted outside. The other has the babies that are still growing.
What else can I do/try?