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Short answer: The Katchy Indoor Insect Trap can catch some mosquitoes and small flying insects indoors, but it is not a mosquito-repellent barrier, a cure for an infestation, or an outdoor-yard trap. It uses UV light, a fan and a sticky board—not an electric zapper. It is most worth considering for a small indoor pest problem when you can place it near the insects and keep competing lights low.
What the “63,000 shoppers” claim means
The headline refers to the Katchy Indoor Insect Trap, also sold in listings as the Katchy Indoor Mosquito & Fly Trap. A June 28, 2024 BGR article said the product had more than 63,000 combined four- and five-star Amazon reviews at that time. That is a historical review-volume figure, not a current count or proof that 63,000 people independently tested it on mosquitoes. Reviews may describe catches of gnats or other insects, and customer reports are not controlled performance testing.
The specific listing captured for this article is for the Katchy Midnight indoor trap with Auto Mode and an eight-pack of refillable glue boards (ASIN B09KWXC52B). The Amazon listing was marked unavailable, with no featured offer or price shown in the available capture. Check the listing for current stock and price rather than relying on an old promotion or assuming another Katchy model is the same bundle.
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How Katchy works
- UV light attracts some nearby flying insects.
- A fan draws them into the unit.
- A glue board holds them so they cannot fly away.
The device captures insects that enter it; it does not repel them from a room or make a person bite-proof. It does not spray insecticide and is not a traditional electric bug zapper. The manufacturer’s Amazon listing describes it as a way to reduce bugs, not a complete insect-control solution.
Which pests is it suited to?
- Gnats and fruit flies: A plausible use, especially when the insects cluster around a plant, fruit bowl, garbage or another identifiable indoor source. Results still depend on placement and whether the source is addressed.
- Mosquitoes indoors: The listing names mosquitoes as a target, and customer excerpts include reports of catching some. But a light-and-fan trap will not necessarily attract every mosquito before it reaches a person, and no controlled capture rate is established by the review count.
- House flies: A poor fit. The Amazon listing specifically says the trap is not for house flies.
- Outdoor mosquitoes: The wrong category. This is primarily an indoor trap, not a way to control mosquitoes breeding in a yard or protect an open patio.
How to give it a fair chance
- Put it near the problem. The product coverage suggests locations near trash, fruit, plants or other places insects gather. An indoor trap in an unrelated corner is less likely to intercept them.
- Reduce competing light. Amazon advises turning off surrounding lights for best results. At night, avoid placing it beside a bright lamp or window that may draw attention away from its UV light.
- Keep it unobstructed. Leave the light and air intake clear. If mosquitoes are the issue, putting the trap right beside the person being bitten may not help; people emit heat, odor and carbon dioxide that also attract mosquitoes.
- Use a fresh, clean glue board. Replace it when its adhesive surface is covered with insects, dust or debris. The listing’s basic directions are to remove and discard the old board, peel the protective layer from the replacement, then place the new board sticky-side up.
- Address the source too. Empty standing water, clean likely drain or garbage sources, discard overripe fruit and reduce excess moisture in plant soil. A trap may catch adults without stopping new insects from emerging or entering through an open door or window.
Exact replacement intervals and current refill prices were not verified. Refill boards are an ongoing cost to factor in; one Amazon reviewer excerpt praised its gnat catches while objecting to the price of branded replacement pads. Do not assume third-party boards fit or work equally well without checking compatibility. Handle sticky boards carefully, keep them away from children and pets, and follow the product listing’s warnings about contact with skin, eyes and clothing.
What customer reports suggest—and what they do not
Amazon excerpts show a mixed, use-dependent picture: some reviewers report catching gnats and mosquitoes; others describe limited results, nighttime-only usefulness, or failure with a house fly. One reviewer said the trap caught a few gnats and one mosquito but did not catch a house fly. These anecdotes suggest it can be useful in the right small indoor problem, not that it will work consistently in every home.
#1 Best Overall
- 2-IN-1 INSECT TRAP: Lures bugs in with a 360-degree ring light and removable pod for liquid bait. Once they’re close, the powerful but silent fan and hidden glue board makes sure they can’t escape.
- MULTIPLE SETTINGS TO FIT YOUR NEEDS: Five adjustable light and fan settings allow you to customize Katchy for your needs. Also has an optional 'automatic' mode to turn the machine on automatically in the dark and back off in the light to save energy and ensure it's used most effectively.
- CONTACT-FREE DISPOSAL: No zapper needed! Glue boards allow for clean and contact-free insect disposal. Includes four complimentary glue boars; additional ones can be purchased at any time through our brand store. Replace every 3-4 weeks for best results!
- NO MORE UGLY TRAPS: Subtle and sleek, the Katchy will fit seamlessly inside of your home, where it is frequently used in kitchens, entryways, and offices.
- WORKS FOR MULTIPLE INSECT TYPES: Is effective in killing fruit flies, gnats, and mosquitos. Not effective on house flies. Registered with the EPA under EPA Est. Numb.:93372-CHN-1.
Some reviewers describe it as not especially noisy, while others found it unsuitable for a bedroom. There is no verified sound measurement here, so noise sensitivity is best treated as a personal consideration rather than a guaranteed quietness claim.
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Consider it if you want a non-zapping indoor device for gnats, fruit flies or occasional mosquitoes, can place it close to the source, and accept replacing glue boards. Treat it as one part of reducing insect numbers—not as a guarantee of total elimination.
Rank #2
- Automatically turns on in the dark and turns off in the light to save energy and ensure it's used most effectively. Shift to manual mode to control exactly when and where you want it to be used.
- Triple trapping power: first the UV light attracts the bug, then the fan sucks it in, and finally the sticky glue boards trap it. No zapper.
- No more ugly traps! Subtle and stylish; easily place in your home, kitchen, or office as a decorative piece. Use the trap only indoors, close to insect-ridden fruit, plants, or trash.
- Not effective on house flies. Is effective in killing fruit flies, gnats, and mosquitos.
- Does not replace pest control. EPA Est. Number 93372-CHN-1
Skip it if your main problem is house flies, an outdoor yard or patio, or a serious infestation whose source has not been fixed. It is also a poor match if you need a repellent barrier, cannot reduce competing light, lack a convenient outlet or do not want recurring refill purchases.
For indoor small flies, source removal and a suitable plug-in glue-board trap may be more important than the particular brand. For house flies, choose a trap specifically designed and labeled for larger flies. For outdoor mosquitoes, look at outdoor mosquito-control approaches—such as managing standing water, an appropriate outdoor trap or repellent, or professional service—rather than treating an indoor Katchy as a yard solution. For personal bite protection, use a repellent intended for that purpose.
Quick Recap
Best Value
- CHEMICAL-FREE INSECT ATTRACTION TECHNOLOGY: Utilizes UV light to effectively attract and trap a wide variety of flying insects, including house flies, mosquitoes, fruit flies, grants, and moths.
- PLUG + PLAY OPERATION: Simply plug into any standard outlet and watch as it quietly and efficiently captures insects without the need for chemical sprays or harmful toxins. Rotating plug fits both vertical and horizontal outlets.
- NO ROOM LEFT UNGUARDED: Plug in anywhere pesky flying insects are lurking, such as near fruit bowls, trash, compost, houseplants, and entryways.
- EASY TO CLEAN:: Removable glue board makes cleaning a breeze; when the no-mess glue board is full, throw it away and replace it with another included one – without ever having to touch the bugs.
- SAFE AND ECO-FRIENDLY: Chemical-free operation ensures safety for pets and children, while also being environmentally friendly.
Rank #4
- Strong stickiness: Even the smallest insects and insects will be caught by these fly traps, making it impossible for them to escape
- Compatibility: The diameter of the rubber plate is 4.3 inches, suitable for most indoor mosquito traps. Note: Incompatible with Katchy Duo
- Durability: This long-lasting adhesive can keep you using each one for up to 4 weeks! Let you no longer be troubled by mosquitoes
- Simple and quick: Take a sticky pad, peel off the plastic cover, and then place the adhesive board at the bottom of the mosquito trap. Please be careful not to stick the sticky side to the flea trap.
- Package details and customer service: Get 36 packs of disposable fly traps and enjoy our 24-hour customer service.
Rank #3
- With both a UV light and a removable pod for apple cider vinegar, the Katchy Duo offers multiple ways - both during the day and at night - to catch fruit flies, gnats, and other flying bugs.
- Adjustable light and fan settings allows you to customize the machine for your specific needs, while 'automatic mode' turns the machine on automatically in the dark and back off in the light.
- No more ugly traps! Subtle and stylish; easily place in your home, kitchen, or office as a decorative piece. Use the trap only indoors, close to insect-ridden fruit, plants, or trash.
- Not effective on house flies. Is effective in killing fruit flies, gnats, and mosquitos.
- Does not replace pest control. EPA Est. Number 93372-CHN-1
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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