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The Drain Fly Kit used to come with DF 5000 drain gel. We now are placing InVade Bio Drain Gel due to customer demand, performance, and better economy for our customers. The video instructions on this page apply to any gel even though DF5000 is used in the video.
The Drain Fly Kit with Invade Bio Drain Gel will treat up to two infested drains and includes CB-80 Aerosol to control nuisance flies during the treatment process, plus 12 Catchmaster 100i Insect Monitors (Pack of 4 boards that split) to monitor infested drains. CB-80 Aerosol will shoot out in quick misting spurts that will allow you to spot treat around sinks and drains and in open areas.
If you have drain flies in a master bathroom with 4 drains (i.e., two sinks, a bathtub, and a shower), you would need two Drain Fly Kits. One bottle of Invade Bio Drain Gel treats one drain for one week.
Be sure to do a thorough Inspection of the area where you have seen drain flies to be sure that you have Identified them properly. Different types of flies will require different treatments.
Please note: CB-80 is undergoing a packaging change from a can with a blue cap/nozzle to a black cap/nozzle. During this transition period, you may receive either a can with a black cap or a can with a blue cap. The product itself has not changed.
Product Documents
| Target pests | Drain flies |
|---|---|
| For use in | Indoors, in and around infested drains. |
| Shipping Weight | 5.85 lbs |
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The Drain Fly Kit contains three different items for complete treatment and monitoring of drain fly infestations. InVade Bio Drain Gel contains natural microbes (bacillus bacteria) and citrus oil with an emulsifier and gelling agent. The microbes break down the scum and organic buildup that are the breeding grounds for drain flies. By targeting the source of the infestation, drain flies are eliminated and kept away. CB-80 Aerosol contains natural pyrethrins and stabilizers to knock down adult flies in the area at the time of application. The included glue boards are used to determine which drains are infested and to monitor treatments. The Drain Fly Kit is not a substitution for general sanitation. Repeat applications should be made until drain fly activity has ceased. The InVade Bio Drain Gel can also be used weekly or monthly for prevention.
Always be sure to properly Identify the flies you are treating: different types of fly treatment will require different products and applications.
How to Apply the Drain Fly Kit
The Drain Fly Kit with InVade Bio Drain Gel will treat up to 2 infested drains.
STEP 1 - INSPECT - Catchmaster 100i Insect Monitors
You should cover infested drains with the included glue board traps. You do this by folding the boards in half like a tent, and then peeling off the plastic film on the glue. (Do not fold the glue boards into the triangle shape.)
*Place the glue board over each drain at night that you want to monitor. The board should sit slightly up off the drain (as shown in the image below), allowing air to move into and out of the drain.
*This will allow you to (1) determine which drains are infested by drain flies so you can focus your treatment in the right areas, and (2) monitor and control infested drains during treatment by catching adult flies that exit the drain.
*If you are treating a bathroom, you should place one glue board over the sink and one over the bathtub drain.
*Tip: After each night, circle caught flies with a marker so that you can see how many were caught each day.
STEP 2 - DRAIN GEL - InVade Bio Drain Gel
InVade Bio Drain Gel contains natural bacteria that break down the organic buildup in drains where drain flies want to breed. Breaking down this breeding source is the key to eliminating drain fly infestations.
*InVade Bio Drain Gel contains citrus oil for a fresh scent.
*Use level markers on InVade Bio Drain Gel bottle to track correct usage.
*Pour 4 oz. of Invade Bio Drain Gel down each infested drain every night for at least 5 nights. *DO NOT rinse the drain with water right after applying the Bio Drain Gel -- you should let the sink sit all night without being used.
*Cover the drain with a glue board (see step 1) during the night to catch any escaping flies.
*When applying in a garbage disposal, turn on disposal for a few seconds to disperse drain gel.
*Apply drain gel during times of lowest use, such as at night or when leaving for several hours.
*Use drain gel weekly for high-use drains or monthly for home drains for maintenance.
*Use a permanent marker to keep track of flies on glue boards that have already been caught.
*InVade Bio Drain Gel can also be diluted with water for mopping and application in other areas where organic buildup occurs, such as dumpsters and trash chutes.
STEP 3 - SPACE SPRAY - CB-80 Aerosol
CB-80 Aerosol contains natural pyrethrins that kill adult drain flies and other flying pests quickly.
*Use CB-80 to rid infested areas of existing adult flies.
*Close doors and windows to treatment area before spraying.
*Apply CB-80 as a space spray by depressing the nozzle for 2-3 seconds per 1,000 cubic feet.
*Spray directly into the middle of the treatment area for small spaces, or use a sweeping motion for larger areas.
*Allow spray to settle and dry before ventilating and then re-entering the area.
*Sweep up and destroy fallen insects.
*Use CB-80 to kill adult flies and other pests on contact.
*Applications may be made as needed.
*CB-80 can be used in most areas. Do not spray when food or utensils are exposed or may be become contaminated.
*Keep other people and pets out of the treatment area until the spray has dried.
*CB-80 also kills most common insect pests on contact, plus it makes a great flushing agent to check for and clean out crawling pests.
It works really good
By Mark on 08/22/2011
I had tons of drain flys and tried some other home remedies that didn't work. In 3 days with this fluid they were no longer hatching. One thing I did to get rid of the ones flying around was take a small plastic container and mix 1 part water (1 cup) with 1 part (1 cup) apple cider vinegar and a a couple drops of dish soap (which keeps the surface from getting a film). They are attracted to the smell of the vinegar and drown in the container. We caught probably 100 in there. My son also rimmed the inside of the container with dish soap as he thinks they slide into the water/vinegar better. I preferred this method to killing the flies vs. the spray bottle stuff in the kit. We had flys mostly coming form the disposal side of our sink but also the other side fo the sink so I put the DF50 in both sides. The bottom line though is you have to keep new flys from hatching and this stuff works for sure. 3 days is pretty good!
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49 of 50 people found this review helpful
Worked well
By Lou on 11/17/2010
Verified Purchase
I used the DF5000 but the Drain Flies were still present after a week. My wife noticed that they larvae were coming from tiny cracks in the grout on the shower floor. I spread some of the DF500 on the floor and used a brush to clean the grout well and let it sit overnight. It has been two weeks now and have not seen any Drain Flies. I used the DF500 and the glue pads, but I did not use the spray. You may not need the spray if you do not have a great deal of flies.
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30 of 30 people found this review helpful
Drain Fly kit
By Kathy on 12/27/2010
Verified Purchase
The sticky paper showed us exactly where the problem was - not actually in the sink drain but where the drain pipe goes into the floor - never would have guessed. The spray kills instantly - great! Don't know how much the green drain cleaner works as I am too big to fit down the sink drain. All in all - a great product. Thank you, Katy
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25 of 26 people found this review helpful
Drain Fly Kit Review
By Si on 06/21/2010
Verified Purchase
Drain Fly Kit
By Donica on 08/06/2010
Verified Purchase
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72 of 87 people found this answer helpful
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27 of 27 people found this answer helpful
Lots of small leeches coming out of my bath room drain.
Have you had these pests actually identified as leeches? Are you seeing small moths or flies in your bathroom? Usually, small worms coming out of the drain indicates drain flies. We recommend that you take a few moments to google 'drain fly larvae' and see if the pictures correspond with what you are seeing in your drain. If the pictures do correspond with what you are seeing, there a few things you should do. Drain flies breed and lay eggs in areas where there is decaying organic matter such as bathroom drains. To start the process of getting rid of this pest you must thoroughly clean the drain where the worms have been spotted. Next you should apply a product called DF 5000. The DF 5000 drain fly gel will coat the inside of the pipe and will help breakdown built up organic matter. This process must be repeated every night for 5-7 days. In pipes where there is a lot of built up (organic matter), a second week long treatment may be needed. If you have spotted adult drain flies in your home, you can spray a product called Clean Air Purge III to help eliminate these breeding adults. You should place glue boards over each drain in the bathroom to capture any flying adults entering or leaving the drains. Using glue boards also helps monitor the level of infestation. We have all of these products combined into a Drain Fly Kit for your convenience.
If these pictures do not look like what you are seeing you must have the insect identified so the appropriate treatment can be recommended. You should contact your local Cooperative Extension Office and ask to speak to the entomologist on staff. The entomologist will tell you how to properly collect a sample for identification purposes or he/she may request a picture.
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16 of 64 people found this answer helpful
I have drain flies in the kitchen (where I first saw them 3 years ago), and now have them in both bathrooms. I wonder if they are behind the kitchen cabinets, too(?). We had a flood in the kitchen area 4 years ago. Not sure if that's related. Could they spreading to the other drains? We also have a floor drain (our kitchen is on the walk-out basement level) and wonder if I should treat that, too.
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10 of 10 people found this answer helpful
I came home from a 10 day vacation only to find drain fly larvae (about 20-60) in the toilet bowl of an upstairs bathroom that is seldom used. I did notice a small fly in the hall by this bathroom before going on vacation, but didn't think anything about it. Of course, I was very concerned when I saw the surprise waiting for me upon my return. Following my first instinct I took a picture of it & then flushed the toilet. I also flushed bleach down the toilet. I haven't seen any more flies, but I don't want to take any chances. Could they be coming up from the toilet drain or did they just lay their larvae in the toilet bowl (due to the stagnant water)? Prior to this event, I hadn't noticed any flies in other areas of the house. I want to put an end to this before it gets out of control. Please advise!!!
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7 of 8 people found this answer helpful
Drain Fly Kit
Rating: 4 (47 Reviews / 24 Q&A)
