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How to Kill Indoor Gnats

By Michael Piacenza ; Updated September 21, 2017

Indoor gnats come from the same family as fruit flies, and they can often be found in houseplants, so it's important to check these plants before bringing them inside. Find out how to use a bio-pesticide to kill indoor gnats with help from a pest control technician in this free video on bugs and pest extermination.


Hi, I'm often times asked how do I get rid of indoor gnats. Well let me help you with that. I'm Michael Piacenza with Advantage Pest Control. Well indoor gnats are kind of in the same family as fruit flies or vinegar flies they're called. They're attracted to decaying matter, decaying fruit, thus vinegar flies. So the way to get rid of them is to make sure, first you want to get rid of the harborages. The gnats are going to come in in houseplants, so if you're bringing any houseplants you want to check those over real well before you bring them into the house. If you do find that they're in there, you want to take the plant out and clean it out, take all that wrapping off the outside of the container because that's really a nice harborage for them and then take the soil off the top, maybe fill it up with a sand. You basically want to get them at the larva stage and then you'll stop the life cycle. With fruit flies it's basically the same thing, you don't want to leave fruits out, you want to put those in the refrigerator. They'll also go for any kind of a vinegar or a wine or beer, if you have any of that sitting out that'll attract them. That's also a nice, natural way to get rid of them is you can put a little vinegar in a bowl very close to where they're at and they'll be attracted to it and then they'll get into it and drown. You can actually put a little paper funnel on top of whatever you put it in like a coffee filter with the bottom cut out so they can fly in and then they can't get back out. You can also use some of the safer pesticides, some of the dusts are really nice. You can put that actually right into the houseplant. You want to be very careful if you're going to put it onto a fruit that you're going to consume, alright? Make sure it's an extremely safe biopesticide, and even in the biopesticides you want to make sure it's one of the exempt products. So you should be able to get the problem taken care of if you get to the source. I'm Michael Piacenza, good day.


About the Author


Michael Piacenza, technician and K-9 Handler, joined Advantage Pest Control in 2007 to expand upon the eco-friendly service offerings and initiate the K-9 termite inspection team. Piacenza uses natural and organic pesticides, as well as a termite-sniffing K-9 to hunt down and kill bugs.