• Call (800) 479-6583
  • Mon-Fri 8am-5pm
  • |
  • Sat 9am-5pm

Invade Bio Drain Fly Killer

Free Shipping on All Orders

Invade Bio Drain is a scum eating citrus oil that breaks down bacteria that can cause clogs in drains and eliminate drain flies. It can be used daily and only requires water. With a thick syrupy consistency, it sticks to the walls of the drain and the product begins to break down the organic matter present. Each application of Invade Bio Drain requires only four ounces.

Target Pests

Bio Drain is used to eliminate build ups in drains while protecting against sugar snakes and drain flies. It is effective and odorless a great option to use in the home.

For Use In

This product is to be used specifically for drains but can also be used to eliminate sugar snakes in soda fountain drip trays. It is also safe and effective to use in mop buckets and trash chutes and urinals.


Apply evenly around drain every other day during the first week then weekly to continue maintenance. DO not run water for a few hours after application. One quart bottle provides 8 applications. One gallon jug provides 32 applications.  

Coverage Area

Use approximately 4 oz per drain and around the sides to coat the edges. Apply 1 oz to each drain weekly. For mop buckets use approximately 4 oz per bucket.

Time to Kill

Bio Drain, once applied, immediately starts working to break down bacteria and grime in drains and eliminating sugar snakes and drain flies. It can take up to 7 to 10 days to eliminate drain flies.

Mix Rate

4 oz per drain

Active Ingredient

Microbes and Citrus Oil

Invade Bio Drain Fly Killer

InVade Bio Drain 

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

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

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

Invade Bio Drain Gel

How Does it Work?

InVade Bio 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.

InVade Bio Drain can eliminate the following:

  • Foul odors

  • sugar snakes (in soda lines)

  • Scum buildup in drains

  • Drain flies and gnats



Ideal Areas to use InVade Bio Drain

Apply InVade Bio Drain Gel anywhere you would like to eliminate odors and organic buildup in drains and soda lines, and on restaurant surfaces. InVade Bio Drain is a great addition to a home pest control plan as it eliminated drain flies and fruit flies that breed in drains. InVade Bio Drain 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 InVade Bio Drain will adequately cut through drain scum to prevent odors.


Use InVade Bio Drain 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 InVade Bio Drain 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: InVade Bio Drain 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.


A quart (32 oz.) container yields 8 drain treatments, 32 soda drain treatments, or 4-8 gallons of diluted solution. A gallon (128 oz.) container yields 32 drain treatments, 128 soda drain treatments, or 16-32 gallons of diluted solution.

Standard Application Dilution rates / Mixing Ratios for InVade Bio 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

InVade Bio Drain is for use 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. InVade Bio Drain Gel 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.



InVade Bio 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.

InVade Bio Drain Gel Features

  • InVade Bio Drain’s use of natural citrus oil eliminates foul odors and leaves drains smelling like fresh oranges.

  • 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.

Product Q & A

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 8 questions Browse 8 questions and 13 answers
Any other products I can use along with the Invade Bio Drain gel?
Stacy on Oct 18, 2016
BEST ANSWER: If you have a really bad infestation then you can also use Gentrol aerosol to spray around the drains.

Hotspot is another foaming product that will work to get a little better coverage. https://www.solutionsstores.com/invade-hot-spot-foam

How is the Bio Drain applied to the drains?
? on Oct 18, 2016
BEST ANSWER: Moisten drain with warm water (1-2 gal) if not used regularly, and apply at low drain usage times of the day. Apply to each drain around the edges sufficient to coat the sides of the drain. 4 oz is typical for a 4� drain. Adjust the amount up or down for larger or smaller drains. Repeat every other day for the first week and then 1-2 times per week as needed for ongoing maintenance. InVade Bio Drain can also be used to treat sugary build-up that can clog soda fountain drip trays drain lines. Apply about 1 oz to each drain weekly
I am still having a problem with the flies how long do I need to use this product?
Mark on Nov 3, 2016
BEST ANSWER: How to apply the Invade Bio Drain Fly Killer Moisten drain with warm water (1-2 gal) if not
used regularly, and apply at low drain usage times of the day.
Apply to each drain around the edges sufficient to coat the
sides of the drain. 4 oz is typical for a 4� drain. Adjust the
amount up or down for larger or smaller drains. Repeat every
other day for the first week and then 1-2 times per week as
needed for ongoing maintenance. InVade Bio Drain can also be
used to treat sugary build-up that can clog soda fountain drip
trays drain lines. Apply about 1 oz to each drain weekly.
Will it kill springtails?
A shopper on May 30, 2018
BEST ANSWER: No, the Invade Bio Drain Fly Killer is only used to dissolve the organic matter in drains and other areas.

Checkout our springtail control section.

Can you use Bio Drain in a sub pump?
Jennifer on Apr 27, 2018
BEST ANSWER: Yes, it won’t hurt the sump pump. However, you should have the drain pipe leading to the pump rodded by a plumber. We had a lot of tree roots, and rodding the drain helped clear the drain flies. Just putting Bio Drain in the sump pump pit won’t take care of the flies.
Is it safe for septic tanks?
James S on Apr 4, 2018
BEST ANSWER: Yes, this will cause no harm to your plumbing or septic tanks.
is it safe for septic system ?
A shopper on Oct 21, 2017
BEST ANSWER: I sure hope so. I have used it. Don't know why it wouldn't
Be safe.
Bio Drain is so thick that with smaller drain openings, it doesn't actually go down the drain--it just sits in the sink. How do I get it to actually go in the pipes? Should I add a small amount of water?
E H on Sep 13, 2017
BEST ANSWER: From what I have read no . i ran hot water in sink before using and while some is still visible in sink it is made thick to actually coat the pipes. I had good results as far as getting rid of drain flies.

Customer Reviews

4.5 / 5.0
6 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Easy to Use
5.0 / 5
5.0 / 5
4.5 / 5
Safe to Use
5.0 / 5
Would you Recommend?
Yes (2)
Easy to Use
5 / 5
5 / 5
5 / 5
Safe to Use
5 / 5
Would you Recommend?
Smells Great
I had a drain fly issue but I resolved it before I found out about this product. My Pest Control guy used it. I plan on using it for monthly maintenance. I love the orange smell.
June 26, 2018
1 month ago
Easy to Use
5 / 5
5 / 5
4 / 5
Safe to Use
5 / 5
Would you Recommend?
Worked well for me
I followed the instructions and after two treatments, the drains were running much faster and the drain fly problem disappeared. I now use it once a week to ensure no buildup begins.
June 8, 2018
1 month ago
Love this stuff!
Bought a quart came back for a gallon! Love using it just about everywhere now!
October 18, 2016
Invade Bio Drain
Invade Bio Drain Smells nice but still having problems with the drain bugs. I removed all fresh fruit from the house counters and trash but they still bug me also. Anyway like I said, smells nice and will probably use the bottles for cleaning instead.
September 16, 2015
Love this Stuff~
Had a bad odor coming from my drain in the kitchen, followed directions applied for 2 weeks and odor gone!
December 4, 2014
Easy to apply and makes for a nice smelling drain...
I had two sink drains (one kitchen and one bathroom drain) that had a constant odor from built up scum. I have applied InVade to both these drains several times and not only do they look cleaner but the bad odor from these drains is gone. In addition the bathroom drain on occasion had little flies crawling around the entrance and since using this product I have not seen any of these flies. Great Product!
August 20, 2010

Contact Us