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hydrogen peroxide plants gnats

Diatomaceous earth (DE) is made from microscopic fossil shards and shreds the larvae and the gnats upon contact.

You can buy DE from garden centres or on Amazon. If you buy DE, make sure you buy the food grade version, not the product made for pools.
Geoff: Despite being one of the most common indoor plant pests, fungus gnats are notoriously hardy and difficult to get rid of.

Method
Did It Work?
Turn up around 2cms of soil in the plant. This exposes the larvae and eggs and helps dry out the soil more quickly. Wait until the soil is dry to a depth of about an inch and a half before watering again.
Did It Work?
Apply a layer of DE to the top of the soil, or mix it into soil mix if you are repotting a plant.

Did It Work?

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.

Hydrogen peroxide plants gnats

There are several other natural methods to deal with a fungus gnat infestation in your home. The most effective way to get rid of adult gnats and fruit flies is by creating your own apple cider vinegar trap.

Once the fizzing stops, the hydrogen peroxide will break down into oxygen and water molecules. The adult flies and larvae will die upon contact with the hydrogen peroxide. Repeat the process until you no longer are dealing with a fungus gnat infestation.
Spray the solution to the underside of your plants and the top layer of soil. The soil will start to fizz, this is normal and is a sign that it is working.

If you have potted plants in your home, then you’re probably no stranger to fungus gnats. These tiny, flying insects like to eat fungi, and the fungus gnat larvae thrive on the decaying organic matter in overwatered indoor plants. Fortunately, you can learn how to get rid of fungus gnats with hydrogen peroxide.
Hydrogen peroxide (H2O2) is one of the best natural methods for killing gnats that have taken up residence in your home. Not only will the natural home remedy kill fungus gnats in all of their life stages: eggs, larvae, pupae, and adult, but you can use hydrogen peroxide for plants without killing them. Here’s how to get rid of fungus gnats with hydrogen peroxide.
While fungus gnats can’t harm you, a severe infestation can be extremely annoying and painful to eliminate. Fungus gnats won’t bite, but they can destroy your houseplants and plants in your garden. Female adult fungus gnats can lay up to 300 eggs throughout their life cycle.
Add the 3% or higher, hydrogen peroxide solution and the water to the spray bottle. Replace the cap on the bottle and gently shake to mix the ingredients thoroughly. Make sure the top layer of soil dry before you begin the treatment.
They lay eggs in the top of the soil. During the larval stage, the fungus gnat larvae feed on whatever organic material is in the soil, including the plant roots. The good news is you can use a common household item to kill fungus gnats.

Just add some apple cider vinegar and dish soap to a small container and cover it with plastic wrap to make simple homemade gnat traps that get rid of your gnat problem and may help with ants or other bugs, as well.

Fungus gnats can destroy your plants if you let their populations multiply. Learn how to get rid of fungus gnats with hydrogen peroxide.