Top 5 Ways To Kill Gnats In House: Quick Fix Guide

Have you ever noticed those tiny, annoying bugs buzzing around your kitchen? They seem to appear out of nowhere, turning your peaceful home into a gnat-infested zone. These little pests, often called fungus gnats or fruit flies, can be more than just a nuisance; they can make cooking and relaxing indoors feel impossible.

Finding the best way to kill gnats in your house is tough. Store shelves are packed with sprays, traps, and natural remedies. Which one actually works? You don’t want to use harsh chemicals near your food or pets, but you desperately need a solution that stops the buzzing. Dealing with gnats often means trying one thing after another, wasting time and money.

This guide cuts through the confusion. We will explore the most effective, proven methods for eliminating gnats for good. You will learn simple, step-by-step solutions, from quick fixes to long-term prevention strategies. Get ready to reclaim your kitchen and living spaces!

Top Way To Kill Gnats In House Recommendations

SaleBestseller No. 1
Zevo Flying Insect Trap & Cartridge - Plug in Fly Trap & Indoor Bug Catcher for Gnats, House & Fruit Flies - Mess-Free - Use in Any Room - Uses Blue & UV Light (1 Plug in Device & 1 Cartridge)
  • Catch Flying Insects 24/7 - This flying insect trap uses blue and UV light to attract and catch house flies, fruit flies and gnats. Its continuous attraction helps it catch insects day and night.
  • Mess-Free Disposal - This indoor fly trap and gnat catcher uses a powerful adhesive backing you will never have to touch. The adhesive pad can discreetly catch bugs, and discreetly faces the wall.
  • Easy-to-Use - To use, remove the sheet from its adhesive backing, insert the disposable cartridge and plug the indoor bug trap into locations where bugs frequent. When full, lift the cartridge out of the insect catcher, and toss it in the garbage.
  • Versatile Placement - You can place this plug in bug trap in your kitchen, bathroom, garage, bedroom, dining room, enclosed patio or in any socket near plants. These insect traps can be used indoors for easy, year-round protection.
  • Includes 1 Plug-In Device and 1 Cartridge - This plug in fly trap comes with one cartridge. Shop our full collection to stock up on refills to ensure you always have one on hand, or bring home a Value Pack with multiple devices so you can keep a fly catcher in every room.
Bestseller No. 2
BioAdvanced Houseplant Insect & Mite Control, Ready-to-Use Fungul Disease & Fungus Gnats Killer, 24 oz
  • KILLS BY CONTACT: Fungus gnat killer for listed insects, such as Aphids, Whiteflies, Lace Bugs and more
  • USE INDOORS & OUTDOORS: Use the gnat spray to protect houseplants indoors and outdoors. It is also may be used on flowers and herbs
  • KILLS MITES: Effective mite killer, including Spider Mites. Thoroughly spray all areas of the plant, especially new shoots and underside of leaves. Pests need to be contacted by the spray to be controlled
  • CONTROLS DISEASES: Protects your houseplants with this indoor plant spray from a wide range of listed diseases such as Powdery Mildew, Leaf Spot, Rust and more
Bestseller No. 3
Zevo Flying Insect Trap Official Refill Cartridges - Fits Both Zevo Trap & MAX Indoor Fly Trap - Authentic Trap+Lock Technology to Catch Gnats, House & Fruit Flys (4 Official Refill Cartridges)
  • Designed for Zevo Devices - The Zevo Flying Insect Trap Refill can fit in both our MAX or standard indoor fly traps. You can use either pest control plug in as a continuous bug catcher to effortlessly trap gnats, house flies and fruit flies.
  • Why Choose the Zevo Refill? - This product is the only Zevo approved refill and unlike other pest control traps, it is made with no added fragrance or dyes. Instead, the Zevo fly catcher uses blue and UV light to lure insects into the bug trap.
  • Mess-Free Disposal - The fly trap refill features a strong adhesive backing that you never have to touch. Flying insects will be trapped here, and you can quickly pop the cartridge out to throw it away once it's full.
  • Catch Insects 24/7 - Zevo fly traps can be used in any room, and will work night and day to catch pesky insects. Stock up on fly trap refills so you can keep a designated trap in your kitchen, bathroom, garage, screened porch, or any other living space.
  • Includes 4 Refill Cartridges - This kit includes four flying insect trap refills. Stock up to ensure you always have one on hand and can count on year round protection.
Bestseller No. 4
Eco Defense Gnat Spray for Indoor Plants – Fungus Gnat Killer & Houseplant Insect Control – Plant-Based Bug Spray for Houseplants & Indoor Gardening
  • TRUSTED PERFORMANCE, LAB-TESTED RESULTS – Lab-tested for proven results, this gnat killer indoor spray helps get rid of gnat infestations fast. Safe for everyday use and trusted by plant owners who expect real results.
  • NATURAL INGREDIENTS, CLEANER LIVING – Made with high-quality essential oils, this gnat spray for indoor plants smells fresh—not harsh. Safe around pets and kids when used as directed, with peace of mind in every spray.
  • GENTLE ON PLANTS. TOUGH ON GNATS – Designed for daily indoor plant care, our formula helps with getting rid of gnats in plants without harming roots or leaves—clean, confident protection you can rely on.
  • GETTING RID OF GNATS IN PLANTS—MADE SIMPLE – Just shake and spray. Our fast-acting formula starts working on contact to control fungus gnats, fruit fly, and even acts as a spider mite killer for indoor plants.
  • DESIGNED FOR CONSISTENT RESULTS, SPRAY AFTER SPRAY – Our upgraded bottle mists evenly with every use. No clogs, no leaks—just reliable gnat control and elevated plant care, exactly when you need it.
Bestseller No. 5
Fly Trap Indoor Plug in – Electric Bug Zapper with Six Light - Silent, Pet Safe & Mess-Free Flying Insect Traps - Gnat Catcher & Fruit Fly Killer for House Home Kitchen Bedroom (1 Device + 1 Refill)
  • [ALTAZ Fly Insect Trap] 12-month Warranty, Committed to 100% customer satisfaction. aaaaa focused on developing high-performance mosquito traps and bug zappers. With a professional R&D team and years of experience, we’ve obtained multiple innovation patents and continually improve our products. Trusted by customers worldwide, we’re committed to making homes more comfortable, safe, and bug-free
  • [AI-Powered Six Light] This plug in fly trap indoor uses upgraded six-light technology powered by an AI chip. It automatically adjusts the light frequency to attract flying insects more efficiently—boosting attraction rate by up to 30%. Perfect for gnats, mosquitoes, fruit flies, and house flies
  • [Double-side Stickers, Easy Replacements] We have upgraded the fly traps stickers! Solve the use trouble of "not sticking firmly". Just peel and insert the glue card, plug in the device, and let it start working. When stick full, simply replace the glue card. A durable, low-maintenance electric bug zapper indoor plug-in solution for continuous protection
  • [Pet & Family Safe] Unlike bug repellents, this indoor insect trap is family-friendly and safe for families and pets. It's a great choice for households looking for a safe and effective fruit fly trap and gnat killer indoor
  • [Multi-Room Use] Use this bug light trap indoor anywhere flies gather—kitchens, bathrooms, bedrooms, living rooms, laundry rooms, near houseplants or pet areas. Targets drain flies, gnats, fruit flies, moths, and mosquitoes with ease.
SaleBestseller No. 6
NatureStop Fungus Gnat Killer Spray, Fast-Acting Treatment for Soil & Houseplants, 16 oz (475mL)
  • Kills fungus gnats at all life stages, including eggs and larvae
  • Gentle formula safe for use around children and pets
  • Suitable for use on indoor plants, soil, and household surfaces
  • Non-staining spray with a fresh, clean scent
  • Made in the USA with trusted ingredients
Bestseller No. 7
Microbe-Life Hydroponics FGX Fungus Gnat Killer, Natural BTi Pest Control for Plants, Indoor Plant Pest Control to Get Rid of Gnats in Houseplants, Safe for Pets & People, 8 Fl Oz
  • PEST CONTROL FOR PLANTS: Microbe-Life Hydroponics FGX insecticide is a Fungus Gnat Exterminator that targets larvae with natural Bti; It breaks the gnat lifecycle in soil so adults never emerge; The 100% natural house plant bug killer is safe for plants, pets, and people
  • GNAT KILLER FOR POTTED PLANTS: Use as a soil drench for potted plants and hydroponics; Ideal for getting rid of gnats in houseplants and gnat control for indoors; FGX insecticide creates a healthy growing environment, supports strong roots, and keeps plants thriving
  • NATURAL FORMULA: Beneficial microbe Bacillus thuringiensis israelensis targets fungus gnat larvae whenre they feed; The plant gnat killer leaves roots protected and growing strong; It contains no harsh chemicals and is safe around people & pets
  • HOW TO KILL INDOOR PLANT GNATS: Add 1.5 mL of FGX insecticide (about 30 drops) per gallon of water; Saturate the top 1-2 inches of soil where gnat larvae live; Repeat every 5-7 days for 2-3 weeks; EPA Registered, Made in USA
  • VERSATILE HOUSEPLANT CARE: FGX insecticide fungus gnat treatment works as an indoor plant soil bug killer and house plant pest control; Protects soil, gardens and hydroponic systems; Enjoy your plants gnat-free with a plant gnats killer that delivers lasting results
SaleBestseller No. 8
Fruit Fly Traps for Indoors by Raid | 2 Lures + 2 Refills | Effective Fruit Fly Killer & Gnat Traps for House Indoor Use | Easy to Use & Safe Food-Based Lure Fly Catcher
  • Traps Insects Where They Gather: Raid Fruit fly traps for indoors target fruit fly activity near ripening fruits, vegetables, drains, and trash areas. The discreet apple design blends into kitchen spaces while effectively capturing flies out of sight
  • Fast-Acting & Easy to Use: Each fruit fly trap attracts, traps and kills pesky flies, comes with a pre-loaded lure packet. Just add warm tap water; no need to open the packet. The lure activates in about 30 minutes and starts working right away
  • Reusable Trap for Ongoing Use: After 30 days, clean the flying insect trap with warm soapy water and insert a new lure. The fly trap is designed for repeated use with replacement lures included in the package
  • 180-Day Food-Based Lure: Suitable to help control flies inside your home, it contains 6 long-lasting lures. Each lure lasts up to 30 days. With 2 lures already in the trap, 2 extra, plus 2 bonus refills, you will be catching fruit flies for up to 180 days
  • Pest Free Living: With a legacy of pest control, PIC offers discreet, quiet, and easy-to-use solutions for managing flying insects. For nearly 70 years, PIC has been helping families solve their pest control problems inside and outside their homes

Your Essential Guide to Waving Goodbye to House Gnats

House gnats can turn a peaceful home into an annoying buzzing zone. Finding the right solution stops the tiny invaders. This guide helps you choose the best way to kill gnats in your house.

1. Key Features to Look For

When shopping for gnat solutions, look for specific features. These features determine how effective the product will be.

  • Fast-Acting Formula: You want a product that works quickly. Slow-acting solutions let gnats keep breeding.
  • Long-Lasting Effect: The best products keep working for days or weeks. This prevents immediate reinfestation.
  • Ease of Use: Simple application is crucial. You don’t want a complicated setup for a small pest problem.
  • Coverage Area: Check how much space the product treats. A small trap won’t cover a large kitchen.
2. Important Materials and Ingredients

The materials used directly impact safety and effectiveness.

For sprays or foggers, look closely at the active ingredients. Many effective solutions use natural ingredients like essential oils (e.g., peppermint or cedar oil) for a safer approach. Chemical options often contain pyrethrins or synthetic pyrethroids. These are strong killers but require careful handling, especially around pets and children.

For sticky traps, the material is usually a strong, non-toxic adhesive. Ensure the trap material holds the gnat securely once it lands. Some traps use UV light to attract the gnats; the quality of the light source matters here.

3. Factors That Improve or Reduce Quality

Product quality varies widely. Understanding these factors helps you make a smart purchase.

What Improves Quality?
  • Targeted Design: Solutions specifically made for fruit flies or fungus gnats work better than general bug sprays.
  • Non-Staining Formulas: If you use a liquid treatment, a clear, non-staining formula protects your furniture and floors.
  • Pleasant or Neutral Scent: Strong, chemical odors reduce the quality of your user experience.
What Reduces Quality?
  • Weak Adhesives: If traps use weak glue, gnats might escape, reducing the product’s effectiveness.
  • Short Shelf Life: Old or expired treatments lose their killing power fast.
  • Poor Packaging: Leaky bottles or damaged traps mean you waste money and effort.

4. User Experience and Use Cases

How you plan to use the product changes what you should buy. Think about where the gnats are coming from.

If you see gnats hovering around your houseplants (fungus gnats), use small, stake-in-the-soil traps or diatomaceous earth. These methods target the larvae in the damp soil.

If gnats are near the trash can or sink (fruit flies/drain flies), a liquid drain cleaner or a specialized sticky trap placed near the source works best. For a widespread problem, an indoor fogger might be necessary, but always follow safety instructions carefully.

A good user experience means you solve the problem without major disruption. You should feel safe using the product in your living space.


10 Frequently Asked Questions About Killing House Gnats

Q: What are the main types of house gnats?

A: The most common types are fungus gnats (from plants), fruit flies (from food waste), and drain flies (from plumbing). Different solutions target different types.

Q: Are house gnat sprays safe for pets?

A: Chemical sprays require caution around pets. Always read the label. Natural oil-based sprays are generally safer, but you must still keep pets away during application.

Q: How long does it take for a gnat trap to work?

A: Sticky traps start catching gnats immediately. Chemical sprays work within minutes. The full elimination of the population might take a few days.

Q: Can I use outdoor bug spray inside?

A: No. Outdoor sprays often contain stronger chemicals not approved for indoor use. Stick to products labeled for indoor pest control.

Q: Do I need to clean the area before using the product?

A: Yes, cleaning reduces the food source. For fruit flies, empty the trash and clean up spills first. This makes the killer products much more effective.

Q: What is diatomaceous earth?

A: It is a natural, fine powder made from fossilized organisms. It kills insects by scratching their outer coating, causing them to dry out. It is safe for humans.

Q: Do UV light traps really attract gnats?

A: Yes, many flying insects are attracted to specific light wavelengths. The UV light draws them toward the sticky surface.

Q: What reduces the quality of a sticky trap?

A: Dust and humidity reduce the stickiness. If the trap gets wet or dusty, it stops working well.

Q: How can I prevent gnats from coming back?

A: Prevention is key. Keep drains clean, do not leave old fruit out, and avoid overwatering your houseplants.

Q: Should I buy a spray or a trap?

A: Traps are great for monitoring and continuous control. Sprays offer fast knockdown for large, visible swarms. Often, using both provides the best results.