This is my first post as I just joined this forum today. I have a small balcony garden and most of my containers are infested with fungus gnats. I went to Home Depot yesterday and asked what I could do to get rid of them. The clerks were very kind. They suggested as you did (drying out the soil) they also suggested that I fill a gallon jug with water and add 2 tablespoons of Baking Soda. They told me that they received this formula from UBC Botanical Garden. Does this really work? I was letting my soil dry out until I used that formula last night, however the darn gnats are still there. They are really driving me "buggy" and I want to get rid of them once and for all. Your input will be very much appreciated.