10 Best Fungus Gnat Larvae Killer For Indoor Plants of 2026

Last updated on 04/04/2026
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Best Choice
1
9.8
Exceptional
Save 8%
Organic Insecticide Liquid Concentrate – Plant Spray for Indoor & Outdoor Use – Controls Fungus Gnats, Aphids, Whiteflies, Mealybugs & Spider Mites – Houseplant & Garden Insect Killer, Fast-Acting
ARBER

Organic Insecticide Liquid Concentrate – Plant Spray for Indoor & Outdoor Use – Controls Fungus Gnats, Aphids, Whiteflies, Mealybugs & Spider Mites – Houseplant & Garden Insect Killer, Fast-Acting

8% Off
Why we love it
  • Natural solution for pest control.
  • Boosts health of houseplants.
  • Safe for family and pets.
Main Highlights
  • Stop infestations fast: eliminates fungus gnats, aphids, whiteflies, mealybugs and spider mites on contact, then protects leaves so plants bounce back greener and stronger. Use at first signs of pests on houseplants or garden beds.
  • Powered by organic biologicals in a true liquid concentrate, it penetrates foliage and soil to disrupt pest life cycles while supporting a balanced microbiome—so roots thrive as populations decline without harsh synthetic residues.
  • Customizable dilution for seedlings, herbs, roses, and shrubs—use lighter mixes for weekly maintenance or stronger ratios for flare-ups. Ideal before moving plants indoors, after repotting, and when quarantining new nursery arrivals.
  • Made for organic gardening and everyday homes—low-odor, dye-free, and gentle on people, pets, and pollinators when used as directed. Works indoors or outdoors on pots, raised beds, edible gardens, and greenhouse collections.
  • Simple to mix, easier to trust: add to water, shake, and spray leaves and soil until lightly wet. Use between waterings, before big blooms or harvests, and after nursery runs to keep your plant collection vibrant, resilient, and pest-free.
9.8
Exceptional
Save 8%
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🛡️Trusted by 100M+ UsersWhy?
Best Value
2
9.7
Exceptional
EcoVenger by EcoRaider All Purpose Insect Control 16 oz, Fleas, Fruit Flies, Gnats, Moths, Roaches, Spiders, Fast Kill, Lasting Prevention, Kill Eggs, Plant Extract Based & Non-Toxic, Child & Pet Safe
EcoVenger

EcoVenger by EcoRaider All Purpose Insect Control 16 oz, Fleas, Fruit Flies, Gnats, Moths, Roaches, Spiders, Fast Kill, Lasting Prevention, Kill Eggs, Plant Extract Based & Non-Toxic, Child & Pet Safe

Why we love it
  • Fast pest control solution.
  • Safe for kids and pets.
  • Targets bugs and their eggs.
Main Highlights
  • 【Kills All Types of Home Invasive Insect Pests】: A versatile home protection spray against all unwelcoming bugs. EcoVenger (formerly EcoRaider) kills and repels invasive insects and provides continuous protection for your house. Kills flying, crawling, biting and stinging bugs and other common household insects including but not limited to cockroaches, spiders, flies, fleas, borers, dust mites, ticks, wasps, scorpions, mosquitoes, fruit flies, silverfish, and moths.
  • 【Kills All Stages of Insects Plus Repels】: Kills adult insects, nymphs, larvae and eggs all-inclusive, even kills the pesticide-resistant insects on contact. Just spray it, no bug can escape, plus the residual effectiveness continues to work for 3 to 4 weeks, providing extended preventative protection.
  • 【Proven by Published University Studies】：EcoVenger (Formerly EcoRaider) is rated #1 “the most effective among many other natural products”, stated in a leading university study published by the Journal of Economic Entomology. More studies have demonstrated that its efficacy is comparable to or higher than most popular chemical pesticides (Deltamethrin, Cyfluthrin and Chlorfenapyr).
  • 【Plant-Based & Non-Toxic but Highly Efficacious】：Contains no chemical pesticide. Its active ingredients are our proprietary combination of botanical insecticidal compounds that are organically extracted from aromatic plants. The formula is only lethal to insects by blocking their neuron transmitter but does not affect humans, animals, fish or birds. It works faster than other green products and is safer than chemical pesticides.
  • 【INGREDIENTS】: Citronella Oil, Geraniol, Cedarwood oil, Sodium Lauryl Sulfate, Glyceryl dicaprylate, Silica hydrate, Glyceryl monooleate and water.
9.7
Exceptional
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3
9.5
Superb
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
Microbe Life Hydroponics

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

Why we love it
  • Natural solution for gnat control.
  • Safe for pets and people.
  • Promotes healthy plant growth.
Main Highlights
  • 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
9.5
Superb
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4
9.4
Superb
The Environmental Factor NemaKnights Slow-Release Nematodes - Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies (280g, Treats Up to 50 Planters)
The Environmental Factor

The Environmental Factor NemaKnights Slow-Release Nematodes - Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies (280g, Treats Up to 50 Planters)

Why we love it
  • Effective pest control solution.
  • Hassle-free application process.
  • Safe for plants and pets.
Main Highlights
  • SLOW-RELEASE NEMATODES FOR EFFECTIVE PEST CONTROL – Ready-to-use granular formulation that provides continuous protection against fungus gnats, thrips, whiteflies, and other garden pests.
  • EASY SHAKEABLE APPLICATION – No mixing required; simply shake the desired amount directly onto the affected area for hassle-free pest control.
  • SAFE & NATURAL BIOLOGICAL SOLUTION – Non-toxic and environmentally friendly nematodes that target pests without harming beneficial insects, pets, or plants.
  • VERSATILE USE FOR ALL GROWING ENVIRONMENTS – Ideal for greenhouses, hydroponic systems, gardens, indoor and outdoor potted plants, and even lawn spot treatments.
  • LONG-LASTING & REAPPLICATION FOR BEST RESULTS – Apply again 10-14 days after the first use to effectively break the pest life cycle and prevent reinfestation.
9.4
Superb
Amazon Logo
5
9.3
Superb
Kate's Home & Garden Plant Spray for Insects & Getting Rid of Gnats with 12 Sticky Traps. Fungus Gnat Killer & Bug Spray for Indoor Plants (16oz, Peppermint, Pet Safe, Non Toxic)
Kate's Home & Garden

Kate's Home & Garden Plant Spray for Insects & Getting Rid of Gnats with 12 Sticky Traps. Fungus Gnat Killer & Bug Spray for Indoor Plants (16oz, Peppermint, Pet Safe, Non Toxic)

Why we love it
  • Natural ingredients ensure safety.
  • Effective against multiple pests.
  • Easy to use and apply.
Main Highlights
  • GNAT CONTROL FOR INDOOR PLANTS: This bundle includes our natural plant bug spray and 12 gnat sticky traps for plants; this powerful gnat spray for indoor plants kills fungus gnats, spider mites, and fruit flies; use it with our sticky traps for enhanced pest control, ensuring thorough coverage and effective elimination of bugs and pests in your home and garden; it's the perfect solution for getting rid of fruit fly and fungus gnats (please contact us if the traps are missing and we will send a replacement)
  • GNAT SPRAY FOR INDOOR PLANTS: This gnat spray is effective for getting rid of gnats in plants; ideal use as an outdoor or indoor plant bug spray for insects to control and eliminate pests (please contact us if the traps are missing and we will send a replacement)
  • FUNGUS GNAT KILLER INDOOR: Made with natural ingredients in the USA; our indoor insect & pest control spray for killing gnats contains peppermint and rosemary oil, a natural and safe solution that works just as well as neem oil spray for houseplant insect control, indoor plants and outdoor gardens
  • NON-TOXIC PLANT GNAT TREATMENT: This peppermint oil spray for bugs is safe for use around children and pets when used as directed; it effectively repels flying pests, small mites, and get rid of gnat infestation, keeping your plants and home pest-free
  • EASY TO USE PLANT BUG SPRAY: Shake the plant spray bottle well before use; test spray on 1-2 leaves and wait 6 hours before spraying the entire plant, avoiding new leaf growth; apply liberally on soil to target pests, eggs, and larvae; for best results, use this gnat killer for indoor plants & outdoor gardens once a week or as needed; this 16oz peppermint spray for plant insects has up to 1,500 sprays; if the sprayer is broken or if the traps are missing, please contact us for a replacement
9.3
Superb
Amazon Logo
6
9.2
Superb
Mighty Mint Peppermint Oil Plant Protection Spray – Insect & Pest Control for Gnats, Spider Mites & Aphids – Plant-Based, Easy-to-Use - 16 oz
Mighty Mint

Mighty Mint Peppermint Oil Plant Protection Spray – Insect & Pest Control for Gnats, Spider Mites & Aphids – Plant-Based, Easy-to-Use - 16 oz

Why we love it
  • Easy to apply and clean.
  • Safe for people and pets.
  • Powerful plant-based ingredients.
Main Highlights
  • Plant-Based Pest Protection: Helps protect plants from common pests including gnats, spider mites, aphids, fungus issues, and other plant-damaging insects using plant-based ingredients.
  • Peppermint Oil Formula: Made with peppermint oil to help deter pests and support healthier plants without harsh chemical treatments.
  • Safe When Used as Directed: Designed to be safe for use around people and pets when applied according to directions.
  • Easy Spray Application: Ready-to-use spray provides quick, even coverage with minimal mess and easy cleanup.
  • Indoor & Outdoor Plant Use: Suitable for houseplants, gardens, greenhouses, and outdoor plants to help maintain healthy plant growth.
9.2
Superb
Amazon Logo
7
9.1
Superb
Root Cleaner - Soil Gnat, Fungus and Pathogen Killer (8 Ounce)
Central Coast Garden Products

Root Cleaner - Soil Gnat, Fungus and Pathogen Killer (8 Ounce)

Why we love it
  • Kills pests on contact.
  • Effective against root rot.
  • All-natural, easy to use.
Main Highlights
  • Kills soil gnats & larvae on contact! Effective against thrips, nematodes & more
  • Effective against soil fungi and pathogens like pythium that cause root rot & damping off
  • All-natural concentrate for use from start to harvest: no gloves, respirator or suiting up required
  • Kills pests and their eggs! No product "stacking" required; pests can't build immunity to it
  • Use on broad mites - they mate in the root zone
9.1
Superb
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8
9.0
Superb
Save 17%
Eco Defense Gnat Spray for Indoor Plants – Fungus Gnat Killer & Houseplant Insect Control – Plant-Based Bug Spray for Houseplants & Indoor Gardening
Eco Defense

Eco Defense Gnat Spray for Indoor Plants – Fungus Gnat Killer & Houseplant Insect Control – Plant-Based Bug Spray for Houseplants & Indoor Gardening

17% Off
Why we love it
  • Trusted performance for gnat control.
  • Natural ingredients ensure safer use.
  • Gentle on plants, effective solution.
Main Highlights
  • 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.
9.0
Superb
Save 17%
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9
8.8
Excellent
Bonide Captain Jack's Neem Oil, 32 oz Ready-to-Use Spray, Multi-Purpose Fungicide, Insecticide and Miticide for Organic Gardening
Bonide

Bonide Captain Jack's Neem Oil, 32 oz Ready-to-Use Spray, Multi-Purpose Fungicide, Insecticide and Miticide for Organic Gardening

Why we love it
  • Three in one pest control.
  • Ready to use today.
  • Kills eggs and larvae.
Main Highlights
  • MULTI-PURPOSE BUG KILLER - Bonide Neem Oil is a perfect pest control solution for any garden dealing with mites, flies, mildew, and more. This product is a three-in-one fungicide, miticide, and insecticide.
  • READY TO USE - This product is conveniently ready to use when it arrives. The spray nozzle makes this product easy to deploy and can even be used up to the day of harvest.
  • KILLS ALL STAGES OF INSECTS - Bonide's 3-in-1 Neem Oil is great because it kills the egg, larvae, and adult stages of insects while also preventing the fungal attack of plant tissues.
  • DORMANT SPRAY - In addition to being useful for ridding your garden of insects and other pests, this Neem oil makes a great dormant spray to help protect your plants throughout all seasons.
  • ORGANIC GARDENING - Derived from the Neem seed, our product is great for use on roses, flowers, vegetables, fruits, herbs, indoor houseplants, trees and shrubs. It's approved for organic gardening.
8.8
Excellent
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10
8.7
Excellent
Save 15%
NatureStop Fungus Gnat Killer Spray, Fast-Acting Treatment for Soil & Houseplants, 16 oz (475mL)
NatureStop

NatureStop Fungus Gnat Killer Spray, Fast-Acting Treatment for Soil & Houseplants, 16 oz (475mL)

15% Off
Why we love it
  • Effective against all life stages.
  • Safe for kids and pets.
  • Versatile for plants and surfaces.
Main Highlights
  • 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
8.7
Excellent
Save 15%
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Related Deals You Might Like for Fungus Gnat Larvae Killer For Indoor Plants

📊We scanned 202 products
🔍
We reviewed the most relevant Fungus Gnat Larvae Killer For Indoor Plants offers across Amazon and leading retailers, covering major brands and models. Our shortlist features trusted names like ARBER, EcoVenger, Microbe Life Hydroponics, The Environmental Factor, Kate's Home & Garden, Mighty Mint, Central Coast Garden Products, Eco Defense, Bonide, NatureStop, known for dependable quality and smart design.
⭐
To determine today's best Fungus Gnat Larvae Killer For Indoor Plants, we analyzed 1011 real customer and expert reviews, focusing on satisfaction, real-world performance and long-term reliability. We also weigh each review's relevance, authenticity and freshness for a fair comparison.

Here's what we found:

🏆 #1
Organic Insecticide Liquid Concentrate – Plant Spray for Indoor & Outdoor Use – Controls Fungus Gnats, Aphids, Whiteflies, Mealybugs & Spider Mites – Houseplant & Garden Insect Killer, Fast-Acting

Our overall winner is Organic Insecticide Liquid Concentrate – Plant Spray for Indoor & Outdoor Use – Controls Fungus Gnats, Aphids, Whiteflies, Mealybugs & Spider Mites – Houseplant & Garden Insect Killer, Fast-Acting by ARBER. It stands out for the right balance of quality, performance and value.

✨ What sets it apart:
✓Natural solution for pest control.
✓Boosts health of houseplants.
✓Safe for family and pets.
💎 Best Value
EcoVenger by EcoRaider All Purpose Insect Control 16 oz, Fleas, Fruit Flies, Gnats, Moths, Roaches, Spiders, Fast Kill, Lasting Prevention, Kill Eggs, Plant Extract Based & Non-Toxic, Child & Pet Safe

The best value for most shoppers is EcoVenger by EcoRaider All Purpose Insect Control 16 oz, Fleas, Fruit Flies, Gnats, Moths, Roaches, Spiders, Fast Kill, Lasting Prevention, Kill Eggs, Plant Extract Based & Non-Toxic, Child & Pet Safe by EcoVenger, with consistently high satisfaction across expert and customer reviews.

💰 Best Deal
Eco Defense Gnat Spray for Indoor Plants – Fungus Gnat Killer & Houseplant Insect Control – Plant-Based Bug Spray for Houseplants & Indoor Gardening

The strongest deal right now for Fungus Gnat Larvae Killer For Indoor Plants is Eco Defense Gnat Spray for Indoor Plants – Fungus Gnat Killer & Houseplant Insect Control – Plant-Based Bug Spray for Houseplants & Indoor Gardening at Eco Defense, currently at 17% off.

🔄Our Fungus Gnat Larvae Killer For Indoor Plants ranking is updated regularly to reflect new releases and price changes—check back for the latest picks and deals.