Quote:
Originally Posted by siege2050
I haven't tried apple cider yet, but this stuff sure works on fungus gnats. I bet the cider works on fruit flies real well. I did a search later and other people have already used sweet oil before me for traps, so I guess I am not the first lol, I just discovered by accident what was already discovered. Every winter the gnats come in with the plants and get out of control, this seems to work pretty well. I germinate seeds during the boring winter, and always lose a few seedlings to gnats. I lost all my Melianthus Major seedlings to gnats last year. Hopefully this will take care of em, and save me some seedlings.
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I've found if I start with soil-less mix and put the pots into plastic bags so the top is tented up with the plastic it gives the seedlings a very good head start against the gnats. Once they are tall enough to touch the plastic just remove it. You have to adjust the amount of water since there is little to no evaporation and remember to burb the bag to exchange gases once a day but be careful no gnats enter while you do this. I'm hoping I catch enough gnats with the oil traps that I don't have to worry about new seedlings so much.