- May 8, 2010
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I have used the Bti twice now. My husband seems to think the gnats have lessened. Since I work swing shifts, I am not here at the time of day they usually come out. I only got one day off last weekend and I had a lot to catch up with around the house and yard that I was not paying too much attention and I wish I was. I have tried the vanilla and that does work, it just needs to be reapplied. I called the National Pesticide Information Center and they gave nothing but positive feedback about this product. It seems according to them that when Bti is applied to the soil, as apposed to directly to water, it's half-life is much longer. I still need a definitive answer on how to dilute it. I have been mixing six drops her gallon of water into a pump up sprayer. I apply it just after watering and try to spray it liberally. This product is supposed to remain active even when the ground dries out. I am still working with this product and will keep you posted. As far as I can tell, the gnats have lessened.