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fungus gnats hydrogen peroxide

Within days the chamomile/cinnamon dousing had dramatically reduced the gnat populations, however, over the next few weeks it couldn’t quite kill off the remaining population.

Brew a litre of strong chamomile tea with boiling water, allow it to cool and mix the tea with 4 parts water. Use tea mix to water plants as usual. Sprinkle cinnamon all over the surface of the soil for a fungicidal double whammy. Repeat for 3 weeks, or until gnats are gone
Did It Work?

Mosquito Bits. Sprinkle bits on soil, generously covering every bit of the surface
They are drawn to moist conditions and, as their name suggests, feed on fungus and other organic matter. In their larval form they eat plant roots, which can make them a potentially lethal infestation for young or vulnerable plants. In their adult form they can be identified by their long legs, squat body and their semblance to tiny mosquitos. In their larval form they are white or translucent and around 5mm long, with a distinctive black head.
Pour a handful of bits into a gallon of water, and leave it to infuse for a day or two
Repeat steps 1 to 7 for a fortnight or a month, depending on the severity of the infestation. If the gnats are still not wiped out, you’re going to have to invest in the more expensive options and follow these steps:
DE was very effective in killing off both larvae and gnats, with good results within a week. After around three weeks, the population was all but gone. Although it is effective, it is quite expensive and, when used outside, will also kill helpful insects such as worms.

Bacteria Thuringiensis (BT) is a natural bacteria which is hugely effective in killing gnats. However, these products are very expensive to buy. Fortunately, a much cheaper option is to buy something called mosquito dunks, or mosquito bits, which contain the same bacteria, although in a lower concentration.

Want To Know How To Control Fungus Gnats On House Plants? In Our Weapons of Gnat Destruction Article We Will Show You The Ultimate Guide to Killing Fungus Gnats.