Once you know that fungus gnats are present, the adults can be killed with any insecticide spray labeled for gnats or flying insects. Treating the larvae in the soil is another matter.
Does fly spray kill gnats?
Gnats can be killed with aerosol insecticides. … Gnats can be zapped with electric bug zappers. Although they won’t get rid of all of them, these devices will kill a lot of gnats, and help keep their population down while you attack them in other ways. Gnats are attracted to bright colors.
What kills gnats instantly?
Homemade gnat killer spray: A mixture of half a cup of water, half a cup of isopropyl alcohol, and a teaspoon of dish liquid can be filled in a spray bottle. This mixture can be sprayed on the gnats directly to kill them.
How do you get rid of gnats instantly?
5 Ways to Get Rid of Gnats
- Make an apple cider vinegar trap. Place a few tablespoons of apple cider vinegar, a few drops of dish soap, and a tablespoon of sugar in a bowl and stir the contents. …
- Make a fruit trap. …
- Pour diluted bleach down the sink or tub drain. …
- Make a candle trap. …
- Hire a professional pest control company.
Does cinnamon kill fungus gnats?
Chamomile and cinnamon are powerful natural fungicides, which kill off the gnats’ primary food source, therefore making the soil inhospitable.
Will coffee grounds get rid of fungus gnats?
Unfortunately, coffee grounds often end up in the trash even though they can be used in various ways even after you have enjoyed your hot beverage. They can, for example, help to get rid of gnats in houseplants or in the garden.
How do you get rid of gnats in potting soil?
If those pests just won’t quit, you can use a solution of water and soap in a spray bottle to spray into the top layer of soil (or pour it directly on top). You can also do this with an organic insecticidal soap or Neem oil mixture; these natural pesticides should be effective after a few treatments.