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Drain Gel Fly Killer

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Drain Gel from American Bio is the best biological enzyme to control fly problems in the home or business. The active cultures in Drain Gel eat away at the organic buildup within drains destroying the habitat of drain flies, phorid flies, and fruit flies and preventing reproduction.

Target Pests

Drain Gel is used to control Drain Flies Phorid Flies Fruit Flies

For Use In

Drain gel is for use in residential and commercial kitchens restrooms and other areas where drains are present.


To use Drain Gel simply coat each infested drain with 4 ounces of product ensuring even coverage.

Do not run water through the drain for 12 hours after applying. This allows the enzymes in the product to eat and break down the organic buildup which is the breeding habitat for flies in the kitchen. Repeat applications of drain gel for 4-5 days to eliminate all phorid, fruit, and drain flies.

Coverage Area

Each drain will require 16oz of product for a proper treatment so a quart will treat 2 drains and a gallon will treat 8 drains.

Time to Kill

Drain Gel take 4-5 days to eliminate the breeding ground. Adult flies may still be present but will dissipate quickly as they die off.

Country of Manufacture

United States

Mix Rate

Drain gel is a ready to use product and should be poured directly into drains.

Active Ingredient

Live Active Cultures

Drain Gel Fly Killer

Drain Gel Fly Killer

Are you sick and tired of having pesky flies hanging around your drain? These irritating drain flies are attracted to the organic buildup in your drain trap and love hanging around in the accumulated scum and using it as their breeding ground!


Drain Gel is the perfect solution to remove the build up and the flies that it attracts with a thickened gel microbial formula.


Drain Gel Fly Killer is a premium blend of microbes and sweet smelling citrus oil that breaks down gunky drain build up quickly and eliminates bad odors. Just apply Bio Drain and it will work immediately to clear up your drain lines.


Drain Gel Fly Killer also makes for a good cleaning solution for use with a hose end sprayer or as part of a cleaning solution when mopping.


How Drain Gel Works?

Drain Gel contains a specially tested and proven solution of natural microbes, a gelling agent, and an emulsifier all blended with a clean smelling citrus oil. These microbes contain bacillus bacteria that can break down organic scum buildup in drains and floors and wherever there has been food and water spills. Naturally blended citrus oil enhances the solution with a fresh scent. Other ingredients include thickening agents to help thoroughly coat drains and other surfaces requiring attention.

Drain Gel can eliminate the following:

  • * Foul odors

  • * sugar snakes (in soda lines)

  • * Scum buildup in drains

  • * Drain flies and gnats

Ideal Areas to use Drain Gel

Apply Drain Gel anywhere you would like to eliminate odors and organic buildup in drains and soda lines, and on restaurant surfaces. Drain Gel Fly Killer is a great addition to a home pest control plan as it eliminated drain flies and fruit flies that breed in drains. Drain Gel can also be used in kitchens, bathrooms and other areas in your home or business.


Hot water, bleach, is not enough to eliminate and sanitize clogged drain. The best way is to utilize a highly concentrated, professional strength product like Drain Gel will adequately cut through drain scum to prevent odors.


Drain Gel Fly Killer does wonders for soda fountains in restaurants to eliminate "Sugar Snakes": Sugar snakes are crystallized polymers which develop and grow in clogged drain lines in soda fountain machines.  When a soda fountain machine is not adequately maintained for a long period of time, these sugar snakes build up and can lead to bad odors and drain line buildups. Applying Drain Gel to soda fountain drain lines will eliminate these sugar snakes.

How To Apply:

  1. Run 1 to 2 gallon of warm water before treatment to moisten the drain.

  2. Apply the product during periods of low usage.

  3. Apply 4 oz to each drain around the edges and coat the sides.

  4. Repeat application for the next few days and then every 1-2 weeks for ongoing maintenance.


NOTE: Drain Gel alone is not a sufficient solution for eliminating drain flies. General sanitation plays a big role. To eliminate drain flies, fruit flies, and other fly pests, thoroughly sanitizing problem areas, removing trash and food waste and removing standing water is important. When the area has been sufficiently sanitized, InVade Bio Drain may be applied.


Standard Application Dilution rates / Mixing Ratios for Drain Gel:

  • *4 oz. per drain per treatment – Daily or every other day for active infestations, bi-weekly for maintenance - Drain buildup, breeding site for drain flies

  • *1 oz. per soda fountain drip trays – Weekly - Sugar snakes and similar buildup

  • *4 oz. per mop bucket – Standard mop bucket

  • *4-8 oz./gal. of water – Surface cleaning with a sprayer, such as for dumpsters and trash chutes

  • *1/2 to 2 oz./gal. of water – Hose-end or power sprayers


Drain Gel can be used in the following areas:

No restrictions on use sites. Intended for drains, floors, dumpsters, trash chutes, bathrooms, and similar surface cleaning.




See above for general directions.Drain Gel Fly Killer may be used full strength in drains or soda fountain drip trays, or diluted for mopping, surface applications, or foaming.

  • * To foam, use 4-8 oz. in a gallon of water and add 2-4 oz. of foaming agent. Apply using a foamer.




Drain Gel is not meant to be used outdoors with the exception of treating surfaces on or in dumpsters or similar structures. In power sprayers or hose end sprayers apply at a rate of 0.5 to 2 oz. per gallon of water.


Drain Gel Features


  • Thickened microbial formula easily coats the sides of drains.

  • Breaks down drain scum and organic material.

  • InVade Bio Drain allows drains to run freely and prevents costly blockages.

  • Can be used for mopping surfaces by diluting with water.

  • Safe to use in septic systems and won’t damage pipes

  • No site use restrictions.

  • Level markers on quart container make correct application easy.


Order Drain Gel Today and benefit from our fast free shipping.

Product Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 7 questions Browse 7 questions and 11 answers
Can you tell me what the best fruit fly trap is? I seem to have an issue in my apartment.
A shopper on Aug 22, 2017
BEST ANSWER: I would recommend you checkout our Fruit Fly Control Guides for all the options in fruit fly control and eradication, https://www.solutionsstores.com/pest-control/flies/fruit-fly-control

Good product for trap fruit flies is the Vector Fruit Fly Traps. https://www.solutionsstores.com/vector-960-fruit-fly-traps
Found small nest inside my shower head. They get in my hair, tried everything. Please tell me what I am dealing with, bite me around my legs,ankles, sometimes get in my bed to bite me. Sounds like drain flies but do they do these things. What am I dealing with?
Mary W on Dec 11, 2017
BEST ANSWER: Doesn't sound like drain flies; they live on the gunk that collects in the drain line and are more peaty than biters. (this product is great for drain flies). Pull up Drain Fly on line. Perusing those sites taught me more that I ever thought I'd need to know!! GG
Do you use this product only once you have a problem with flies or should you use it periodically as a preventative measure? If so, how often?
Becky W on Dec 31, 2017
BEST ANSWER: Drain Gel should be used once a month as preventative to keep the drains clean and organic matter from building up. This will reduce the chances of fly infestation, and keep water flowing.
Will this cleaner harm the pipes especially pipes in a old house?
Vanythia B on Sep 5, 2017
BEST ANSWER: No, Drain gel is completely safe for all types of plumbing and pipes, in fact is beneficial in the life of the system.
Will this product harm an aerobic septic system?
Bill on Jun 26, 2017
BEST ANSWER: Yes, Drain gel is perfectly safe for s Septic System. New formula DrainGel� is a highly concentrated
bacterial gel that actually digests grease buildup
that accumulates over time in commercial accounts.
DrainGel�s� proprietary formula includes MGD�
(Microbial Grease Degrader), a patent-pending
Bacillus strain that breaks down long chain fatty
acids � the primary component of problem grease
deposits. DrainGel� application also controls foul
odors by inhibiting the normal biological production
of odor-causing compounds such as hydrogen
sulfide and rancid fatty acids that result from septic
or anaerobic environments. DrainGel�s� biological
support ingredients and essential growth factors
promote rapid germination and growth of its microbial
blend resulting in increased effectiveness
Can I keep this product in the drain longer then one night?
Anthony on Oct 18, 2016
BEST ANSWER: Drain gel will be fine to keep in the drain overnight and the next couple of days before rinsed down the drain.

Hi I was wondering if I could pour this product in a toilet in a camper?
Caseygary on Jul 22, 2016
BEST ANSWER: You should be able to use drain gel in a toilet for a camper. It is just a bio enzyme bacteria so it should help with decomposition as well.

Customer Reviews

4.8 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Really works
I used this drain gel for 5 days and it took care of the pesky drain flies.
September 21, 2017
6 months ago
It worked great. Make sure you use the whole bottle for best results.
August 19, 2017
1 year ago
Works Ok
this drain gel helps eliminate gnats
February 24, 2016
Help With Gnat Problem
this drain gel does help a lot getting rid of the gnats from your drain make sure to use it at least 4 days in a row
February 19, 2016
Great product
This product was easy to use and worked efficiently - no fuss, no muss!
October 29, 2015
Drain gel fly killer
Great product and solved our problem! Solutions self chem was an easy to use web site and the tutorial was very helpful. The product was shipped out when they said it would be and arrived earlier then expected.
August 4, 2015
Drain Gel
This product has been extremely helpful in getting rid of drain flies. Thank you
September 12, 2014
This stuff works!!
I am a professional exterminator and have been using this product for years with great results.
June 28, 2013
Drain Flies
I purchased 2 bottles of the drain gel. It did help slow down the drain flies but unfortunately, we are still having a problem. We just discovered that the problem might be the floor drain in the garage that is next to the hot water tank. So, we are ordering more to use for this drain as well. We have definitely seen a decrease in the amount of flies so I know the product is working!! Will be ordering more. Thank you!
April 27, 2010
Works Great!
We noticed a few fruit flies(gnats) flying around our kitchen and assumed that it was from the bananas on the counter. We got rid of the bananas but the flies did not go away, they got worse and we started to see them in our bathrooms as well. We could not get rid of them no matter what we did and i was ready to call an exterminator. My sister was over one day and said that she had the same problem and called an exterminator and he poured Drain Gel down all the sinks in house and told them to use it for 4 or 5 nights in a row. I searched for Drain Gel online and found it at ePestSolutions.com and ordered it right away. It worked GREAT and I am so happy that I found this website as I will be back whenever I have any pest control issues in the future. I am going to order another bottle to have on hand in case they ever decide to show up again.
January 6, 2010

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