10 Best foaming drain cleaner and gnat killer

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Last Updated: 11-16-2025

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Drain Fly Killer Powder – Eliminates Drain Flies & Gnats in Drains, Sinks, Showers – Fast-Acting Treatment - Septic Safe & Made in USA

Accelerator by Dr. Pooper

9.8

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- 13%

Green Gobbler Fruit Fly Goodbye Gel Drain Treatment | Killer Flies & Eliminator (1 Gallon)

Green Gobbler

9.6

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Best Value

- 17%

Fruit Fly & Drain Fly Killer - Simple Commercial Drain Gel Treatment – Eliminates Gross Fruit/Sewer Flies & Gnat Infestations from Any Drain. Fast & Easy - 1 Gallon (128 Ounces)

Natural Armor

9.5

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Natural Elements Fruit Fly Killer | Drain Flies, Gnats, Flying Ants | Home & Commercial Use | Non-Toxic Gel Formula | 1 Gallon | 128 Fl Oz

Natural Elements

9.2

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Quest Specialty DIGEST PLUS Foaming Drain Cleaner and Odor Eliminator, 2 count

Quest Specialty

9.1

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TERRO Drain Insect Killer - T590 Drain Fly Killer Spray - Foam Treatment for Fruit Flies, House Flies, and Cockroaches

Terro

8.8

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- 20%

Kinzua Environmental Fly-Zyme, Highly Concentrated Enzyme Drain Cleaner for Pipes, Drain Gel for Fruit Flies, Organic Waste Degrader & Odor Neutralizer, 32 fl oz

KINZUA ENVIRONMENTAL

8.6

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- 24%

Kinzua Environmental Fly-Zyme, Highly Concentrated Enzyme Drain Cleaner for Pipes & Fruit Flies, Citronella Scented Organic Waste Degrader & Odor Neutralizer, 32 fl oz

KINZUA ENVIRONMENTAL

8.4

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Green Gobbler Fruit Fly Killer+ - Kills Fruit Flies, Drain Flies & Sewer Flies, Gel Treatment for Use in Sinks & Pipes - Safe for Septic Systems, 32oz

Green Gobbler

8.2

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Rejuvenate Garbage Disposal and Drain Pipe Cleaner Powerful Foaming Action and Removes Garbage Disposal Smells 6 Unit Pack Lavender Scent

Rejuvenate

8.1

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Drain Fly Killer Powder – Eliminates Drain Flies & Gnats in Drains, Sinks, Showers – Fast-Acting Treatment - Septic Safe & Made in USA

Green Gobbler Fruit Fly Goodbye Gel Drain Treatment | Killer Flies & Eliminator (1 Gallon)

Fruit Fly & Drain Fly Killer - Simple Commercial Drain Gel Treatment – Eliminates Gross Fruit/Sewer Flies & Gnat Infestations from Any Drain. Fast & Easy - 1 Gallon (128 Ounces)

Natural Elements Fruit Fly Killer | Drain Flies, Gnats, Flying Ants | Home & Commercial Use | Non-Toxic Gel Formula | 1 Gallon | 128 Fl Oz

Quest Specialty DIGEST PLUS Foaming Drain Cleaner and Odor Eliminator, 2 count

TERRO Drain Insect Killer - T590 Drain Fly Killer Spray - Foam Treatment for Fruit Flies, House Flies, and Cockroaches

Kinzua Environmental Fly-Zyme, Highly Concentrated Enzyme Drain Cleaner for Pipes, Drain Gel for Fruit Flies, Organic Waste Degrader & Odor Neutralizer, 32 fl oz

Kinzua Environmental Fly-Zyme, Highly Concentrated Enzyme Drain Cleaner for Pipes & Fruit Flies, Citronella Scented Organic Waste Degrader & Odor Neutralizer, 32 fl oz

Green Gobbler Fruit Fly Killer+ - Kills Fruit Flies, Drain Flies & Sewer Flies, Gel Treatment for Use in Sinks & Pipes - Safe for Septic Systems, 32oz

Rejuvenate Garbage Disposal and Drain Pipe Cleaner Powerful Foaming Action and Removes Garbage Disposal Smells 6 Unit Pack Lavender Scent

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