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(More customer reviews)Ever since I started growing houseplants, I've had a bad infestation of fungus gnats. I found that the bag of potting soil I purchased from the store was the culprit and tried almost everything known to man to try & get rid of them. Finally being fed up with it, I created my own concoction of outdoor pesticides and although it got rid of the gnats, it almost killed all my houseplants.
My plants came back to life after I drenched the treated soil with plain water, but this was over a year and half ago. I decided to repot my plants recently and ran into the same infestation of fungus gnats once more after getting another bag of potting soil.
My girlfriend threatened to throw my plants away, but I promised her I'd take care of it. Fearing for the life of my plants and not wanting them to go through the same near-death experience, I bought several indoor insect sprays (Neem Oil, pesticides based on Chrysanthemums, etc). Unfortunately none of them worked.
I did more research on the Internet and found "Gnatrol" (AKA BTI) is one of the common solutions to fungus gnat larva. Not wanting to go through "no name" Internet stores, a quick browsing search resulted in me choosing Amazon as my retailer of choice.
My infestation was pretty bad. I had at least 20+ fungus gnats flying around on a particular plant and in the soil. Before Gnatrol, I had to opt to use a vacuum cleaner to suck them up on a daily basis until my Gnatrol came in the mail. I ordered the 60 gram container of Gnatrol from BetterGrow Hydro. This is actually more than enough. I haven't even used the full gallon of drench I created from the mixture and probably have enough for 15 more gallons for further treatment. There is a shelf life for Gnatrol, so if you don't anticipate using all of it in a timely manner, you'll probably be wasting it.
Finally after receiving the Gnatrol, I followed the instructions on the container for "bad infestations" and drenched all my houseplants with it.
Information on Gnatrol (BTI) on the Internet states that Gnatrol will only affect fungus gnat larva. It will do nothing to adult fungus gnats. Furthermore, the average life span for a fungus gnat adult is 7 days.
Today is day number 6. I inspected my plants thoroughly this morning and only found 2 fungus gnats on the houseplant with the worst infestation. The Gnatrol seems to be working. Despite the fact that 2 adult flies are on my plants, it's possible that those were adults from the day I drenched my plants with Gnatrol. We'll see if there are any more left over in the next couple days.
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Gnatrol WDG - 60 grams
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