Ask Experts Questions for FREE Help !
Ask

    Drain Flies from pipe in Sump Pump Area

    Asked Jul 16, 2008, 08:19 PM 4 Answers
    We've been in our home for two years now. For the first year, we were fine, but this year, we've had record rainfall and billions of drain flies since late February. We didn't know where they were coming from at first, but now we know where... the pipe where the sump pump is located. See attached photo. This is the sump pump and the black pipe that all the drain flies are coming from (located in the storage closet under the stairs of the walkout basement). If it weren't for the fly strips and the light bulb, those thousands of flies would be all over our house... right now they are contained in the closet but not dying despite pouring about 5 gallons of bleach down there and 16 oz. of Invade Bio-Foam. We also have to change the fly strips weekly because they are so covered in flies that there is literally no stick to them. The flies are not in the sump pump itself but they are coming in from the rain water drain off pipe (the black one) that comes into the house; the water drains off into the sump pump area where the pump takes it out of the house through another pipe. So the black pipe is where it's coming from. The pipe itself is clean up to what my husband could reach. He even ran a 25 foot snake down there and still nothing. I would really appreciate any help or suggestions you could give us. We didn't have this problem last year, but we didn't have the record rainfall either. What can we do? As you can see, it is really gross! Help! Oh, and we are on City Utilities, not a septic tank. We have already called five different pest control places who won't touch it (either told us to pour bleach or keep doing what we are doing), one plumber who cleaned sewer lines but told us to call pest control, and an online seller of DYI pest control. We just need some help:(.

    Attached Images Attached Images
    Last edited by Val08; Jul 16, 2008 at 09:14 PM.
    Search this Question
    Share |
    4 Answers
    WVHiflyer's Avatar
    WVHiflyer Posts: 384, Reputation: 34
    Full Member
     
    #2

    Jul 17, 2008, 01:14 AM
    It sounds like you've done just about everything... any suggestions I usually have about drain flies either wouldn't work here or you've tried it. The first suggestion though, is a screen over the pipe. How much debris comes in with the water? Where is the other end of the pipe, underground, or can you get to it? While waiting fore your answers, I'll cogitate a bit on the prob... <g>
    Helpful
    Val08's Avatar
    Val08 Posts: 7, Reputation: 1
    New Member
     
    #3

    Jul 17, 2008, 06:24 AM
    Hi there,
    We don't have a screen over the pipe. The other end is underground. What kind of screen would you recommend? One that is small enough would keep the adult flies contained, but won't they still breed? Any suggestions would help. Thanks!
    Helpful
    WVHiflyer's Avatar
    WVHiflyer Posts: 384, Reputation: 34
    Full Member
     
    #4

    Jul 17, 2008, 06:06 PM
    I think a window screen with small mesh should do it as long as it wouldn't get clogged. If ther's a chance, try a more open screen. And you could always fasten it for easy removal with a large pipe clamp for cleaning. If they breed, they should still be contained(?) And water rushing through should take care of larvae. The prob would be if eggs were washed through... so, try it for a month or so and see if it works, but keep the flystrips up. Hope the suggestions work. Let me know.




    -
    Helpful
    Val08's Avatar
    Val08 Posts: 7, Reputation: 1
    New Member
     
    #5

    Jul 17, 2008, 07:01 PM
    Thanks so much! We will try that with mire biofoam! :) Hopefully they will die!
    Helpful

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Length of Sump Pump exhause hose/pipe [ 2 Answers ]

Sump Pump hose length - how long of a hose/pipe can I safely connect to my sump pump without risk of damage or wearing it out? My current setup is that the pump, pumps up a PVC pipe (9') then out to the exterior which is 15', from the exterior I have about 30' of PVS which is sloped, then about...

Drain tile and sump pit and pump [ 3 Answers ]

Can anyone be more specific as to install drain tile and sump pit. Like how deep should I dig down around inside of foundation.How far from the foundation walls. Should I come out and how far from the wall should I place the pipe. Can I use 4 in plastic flex pipe? Should the concrete be cut with...

Sump pump, discharge drain and city drain [ 1 Answers ]

Hi - I've 2 problems. Problem 1: When it rains, there seem to be a lot of water discharging out from the overflow pipe of my sump pump plumbing on the outside. According to a neighbor, he says it looks like the water is just coming out from the overflow pipe whenever it rains. I've lived...

Improper venting, backup from sump pump to vent pipe [ 2 Answers ]

Help! We moved into an old house, our plumbing vent is about 4 ft. from basement floor. Every time we use kitchen sink or bathtub, it backs up into vent pipe. Also, our sump pump backs up into vent. We have tried to snake it and also poured drain cleaner down every drain. I know the vent should be...

Gnats/flies in drain pipe [ 3 Answers ]

Sorry for posting another question so quick after you answered the first but I had something else I wanted to get your opinion on. This is my first house and I am still learning on how to work simple plumbing jobs. We have a clean-out on the outside of our house so you can access the pipe that runs...


View more questions Search