How Do Gnat Traps Work? A Tutorial


If you’ve been suffering a gnat infestation in your house, it’s time to ditch your old ways and think about using gnat traps. While most people use chemical pesticides, they’re not the best option out there. They’re harmful, toxic, and there are a lot of better alternatives. In fact, you can make most gnat traps at home easily. But how do gnat traps work?

In this article, we’ll review the best gnat traps you can use in your house and how they work. Hop on to find new ways to fight the pesky invaders!


How Do Gnat Traps Work? 7 Different Traps


If you’re curious how do gnat traps work, we’ll leave no questions unanswered. Here are the most common gnat traps and their methods of killing the flies.


Trap 1: Fly Paper


Raid Fly Stick, Pack of 6, Each Trap Catches up to 150 Flies, Indoor and Outdoor Use
941 Reviews
Raid Fly Stick, Pack of 6, Each Trap Catches up to 150 Flies, Indoor and Outdoor Use
  • Catches Over 150 Flies Per Stick Metallic Lure To Attract Flies Perforated Carton To Hide Trap No Broadcast Insecticides Indoor/outdoor Use


Flypapers are some of the most common gnat traps. They’re pretty trustworthy, and they’re satisfying because you get to see the results for yourself.

How do they work?

They’re a very simple trap. Flypapers are sticky, and they come in bright colors to attract gnats and flies. When you hang them around your house or place them anywhere, the gnats get attracted to the color. They come closer only to find themselves becoming one with the paper.

They’re best placed next to windows and doors, so the gnats stick once they get in before they can go any further into your house.


Trap 2: Apple Cider Vinegar (Fruit Fly Trap)


Bragg Organic Apple Cider Vinegar With the Mother– USDA Certified Organic – Raw, Unfiltered All Natural Ingredients, 16 ounce, 2 Pack
23,894 Reviews
Bragg Organic Apple Cider Vinegar With the Mother– USDA Certified Organic – Raw, Unfiltered All Natural Ingredients, 16 ounce, 2 Pack
  • BRAGG APPLE CIDER VINEGAR: The Bragg ACV Vinegar is made from organically grown apples, and offers various health benefits. To easily incorporate ACV...
  • ORGANIC INGREDIENTS: The Bragg ACV is raw, unfiltered, and crafted from organically grown apples. It is USDA certified organic, Non-GMO Verified, and...
  • MOTHER OF VINEGAR: The ‘Mother’ consists of strands of proteins, enzymes, and friendly bacteria that give the product its murky appearance. The...


Apple cider vinegar is nearly the best natural fruit fly trap known to humans. It kills gnats and flies in an instant and without much effort on your part. All you have to do is grab a bowl, fill it with half a cup of warm water, then add two tablespoons of apple cider. Then, add five drops of any dish soap you have, along with a tablespoon of sugar.

Mrs. Meyer's Liquid Dish Soap, Biodegradable Formula, Lemon Verbena, 16 fl. oz - Pack of 3
23,325 Reviews
Mrs. Meyer's Liquid Dish Soap, Biodegradable Formula, Lemon Verbena, 16 fl. oz - Pack of 3
  • This liquid Dish Soap cuts through grease, while making dishes clean and bright
  • Our Dish Soap has a biodegradable formula that contains plant-derived cleaning agents and other thoughtfully chosen ingredients to make grease...
  • Garden-inspired Lemon Verbena has a light, refreshingly mild citrus scent
Domino Sugar, Granulated, 4LB Canister
3,604 Reviews
Domino Sugar, Granulated, 4LB Canister
  • Pure cane sugar
  • Extra fine granulated
  • All purpose sugar
Glad Cling ‘N Seal Plastic Food Wrap, 300 Square Foot Roll - 4 Pack (Package May Vary)
3,877 Reviews
Glad Cling ‘N Seal Plastic Food Wrap, 300 Square Foot Roll - 4 Pack (Package May Vary)
  • GLAD CLING ‘N SEAL WRAP: Extend foods' freshness with 2X Freshness Protection with an airtight seal and moisture block technology; Packaging may...
  • PLASTIC FOOD WRAP: Glad Food Cling ‘N Seal clings to multiple surfaces including glass, metal and wood to keep leftovers fresh and prevent unwanted...
  • CLING TIGHT WITHOUT A FIGHT: Glad Cling ‘N Seal grips tight, seals easy and is an ideal clinging wrap for steaming, protecting and reheating food...

You can leave the sugary mixture out in the air, and it’ll attract the gnats. Or, you can cover the bowl with plastic wrap and poke holes through it. That way, your trap will attract the gnats, only to find themselves dropping through the holes with no way out.


Trap 3: Candle Trap


Candle traps are old-fashioned; they’re an old-school trick, but they’re highly efficient in getting you rid of your gnat problem. How do they work?

You put a candle in a candlestick, light it, and put the stick in a bowl of water. Then, you turn off the lights in the room where it’s placed. The gnats will get attracted to the flame, and they’ll either fall into the water or burn. So, you’ll get rid of them either way.

The only downside to this tap is that it’s not safe to leave in a room alone, seeing as there’s flame involved. Otherwise, it’s pretty effective.


Trap 4: Electric Zappers


No products found.


Zappers are originally meant for large flies, but a lot of people use them for gnats, and they’re pretty effective. Nowadays, there are a lot of brands making electric zappers safe to use indoors. In the past, they were only safe to use outside houses, so they were rendered useless.

You can find a lot of zappers online and in stores. The TBI Pro, for example, is one of the best zappers on the market for both outdoor and indoor use.

Zappers work by sending electric currents when the bugs or gnats come in contact with the LED lights. They’re quiet and odorless, which are the main reasons people love them.


Trap 5: Wine Trap


No one in their right mind would use expensive wine to lure away gnats. Instead, they use the expired wine that already turned into vinegar. When it’s no longer useful for you, you can use it to make a gnat trap.

You can use it in the same way you did with the apple cider vinegar: a bowl trap. When mixing it, add the wine to a small bowl and drop some dish soap. Then, you’re done with the trap. Place it anywhere in your house, preferably areas with the most gnats.

This trap works in the same way as the apple cider vinegar trap. The sugary scent lures the gnats in, and the wine kills them once they get in contact with it.


Trap 6: Rotten Fruit Trap


Makerstep 1000 Wooden Toothpicks Ornate Handle in Toothpicks Holder Container 2 Packs of 500, Good for Craft, Party, Cocktail Picks, Cleaning Teeth, Appetizer.
  • Toothpicks for all occasions - Our toothpicks for teeth are useful for every day. Also, it’s good for parties. Your guests will be thrilled with the...
  • Pure toothpick - Our decorative edged toothpicks are made from pure wood making them sturdy, durable and suitable for vegans. The smoothly finished...
  • Versatile toothpicks - These toothpicks can be used for cleaning your teeth, for applying glue to and cleaning tight grooves on the body of electronic...


Although rotten fruits are among the causes of gnats, they can serve as a pretty efficient trap. Plus, you’ll get to use the fruits for something useful instead of throwing them out, which is a bonus.

If you have an overripe fruit, cut it into pieces and put it in a large bowl. Then, cover the bowl and plastic wrap, keeping it in place using a rubber band. Afterward, use a toothpick to poke some holes in the wrap.

The fruit’s scent will attract the gnats, and they’ll fall through the holes with no way out. The trap is the same as the apple cider vinegar but with rotten fruits instead of the liquid.


Trap 7: Diluted Bleach Solution



Drain gnats are the worst. It’s one thing having gnats near your rotten fruits or plants, but having them in your sink? That’s a no-no!

Using bleach isn’t an ideal solution, but it’ll get rid of drain gnats in an instant. Plus, you’ll be using diluted bleach. So you’ll be in no danger.

For starters, make sure you cover your skin and don’t touch the bleach or breathe in it. Then, pour half a cup of it in one gallon of water. Mix it well and pour it down the drain with the gnats around.

It’ll get rid of your problem fast. However, make sure not to use the sink for a few hours afterward.


How do Gnat Traps Work? – Downsides of Gnat Traps


Gnats traps are mostly efficient, but they come with their downsides. These downsides are the reason many people prefer using chemical sprays, although these are harmful and they smell bad.

The first downside of gnat traps is that you’ll have to see the dead gnats staring back at you. Whether it’s a fly stick, a zapper, or a vinegar trap, the dead gnats will keep sitting there until you remove them, which isn’t ideal. Plus, if you leave the trap long enough, you’ll have an unpretty-looking trap in the middle of your house.

There’s also the fact that gnat traps need to be replaced often. It’s not ideal to keep revisiting the trap over and over again when you surely have better things to do. Plus, you’ll be using a bowl or a container that you probably won’t be able to use for anything ever again.

So, it’s always good to think about all the factors of gnat traps. If you don’t mind the frequent replacements and the dead gnats lying around, go for it. In the end, gnat traps are highly efficient. However, if you don’t want that, there are always alternatives available.


How do Gnat Traps Work? – Final Thoughts

Gnats usually need immediate attention, or else the infestation will grow bigger. Instead of a couple of gnats hanging around your bowl of fruits, you’ll find a full population. Applying the traps fast and in the right places is your key to getting rid of them.

For a complete line of all of our organic pest control, CLICK HERE!

Shopping Cart