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New Member
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Jan 19, 2010, 12:52 PM
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Shower vent moth fly drainage trap
We have had little black drainage flies in our bathroom for quite sometime, the master shower which is lined with ceramic tile. People come to clean once every 2 weeks. I have poured bleach and Draino down the drain, but the flies keep coming back. I plan to try this Orange Citrus Drain and Disposer Cleaner, bleach and recaulk the shower, but I have a feeling it won't get rid of the problem. Coiuld these be coming from the roof vent to the shower, could it be from the drain trap, or could it be a mold problem behind the tiles? Could the builders of the house be liable for this drain fly problem? At wits end! Any help would be appreciated?
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Pest Control Expert
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Jan 19, 2010, 01:34 PM
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Originally Posted by violettaviola
Coiuld these be coming from the roof vent to the shower, could it be from the drain trap, or could it be a mold problem behind the tiles?
They could be coming from any of these. The most likely suspect is from eggs laid in the organic buildup along the sides of the pipes. You will need an enzyme drain cleaner to remove the buildup so the larvae have nothing to feed on.
Occasionally they can lay eggs in soil under a slab and the larvae can get in if the tile is laid directly on the concrete. In that case sealing is the only remedy.
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Eternal Plumber
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Jan 19, 2010, 04:51 PM
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You are infested with Moth/Drain/ Flies.
Moth or drain flies are small black flies which
Thrive in drain pipes and sewer lines. They need
A lot of moisture to complete their life cycle.
Drain flies do not fly well. They tend to drift
And seem to float along more than fly. Their
Wings are shaped like a leaf of a plant and one
Can see hair like fibers on all parts of their
Body which is why they are also called moth flies.
I have dealt with drain fly infestations in
Many homes which start in the sink or bathroom
Shower. The drain lines which have the most
Activity seem to be the ones most likely to have
An infestation. I have also observed that homes
With septic tanks seem most likely to get them.
I am not sure if there is some kind of build up
Which occurs more with this type of drainage
Or if there is something in the tank which allows
These flies to prosper. Although these homes
Seem more likely to get drain flies, once the
Cycle begins it takes place in the home. I have
Encountered several infestations where the larva
Were found crawling out of shower or bath tub
Drains. The homeowners thought they were some
Kind of leach. In fact, the larva of drain flies
Thrive in a slime buildup which is on virtually
Any drain pipe which is used a lot. This slime
Enables the eggs which are laid to be protected
And sheltered. The eggs and hatching larva
Embed themselves in this slime so they don't wash
Away. The cycle of these flies takes around
A month to complete. Don't waste your time with
Bleach or other cleaning solvents. Showers and tubs
Which have ceramic tiles may also supply a moist
Slimy environment in which they can live. Sump
Pumps and wet crawl spaces are other environments
Where I have seen them live. Drain flies can be harder
To control than other small flies. Although
There are several products to kill adults, the
Key is maintaining and minimizing their breeding
Areas. This could prove to be difficult and
Ongoing.
Like most flies, there are several products
Available for their control. Use a "SPACE SPRAY"
For immediate relief of the adults. There are
Several to choose from in the section below.
This will quickly control the adults, but the
Secret to getting rid of them is to use a
Product we sell which removes the slime build
Up on drain pipes. By removing this slime, the
Larva cannot develop. This will stop the cycle.
In the "SURFACE SPRAY" section below, look for
The product called SURVIVORS. This is applied
Down drain pipes and will remove the nest sights
These flies need. You may also use the product
Called PT-CYKICK which is located in the same
Section. It is ideal for treating in cracks and
Crevices where these flies like to lay eggs. Such
Cracks will develop around ceramic tile, windows
And grout joints.
They are difficult to get rid of , I know I was infested for more then three months.
Good luck, Tom
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Pest Control Expert
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Jan 19, 2010, 05:57 PM
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Originally Posted by speedball1
You are infested with Moth/Drain/ Flies.
Moth or drain flies are small black flies which
thrive in drain pipes and sewer lines. They need
a lot of moisture to complete their life cycle.
Drain flies do not fly well. They tend to drift
and seem to float along more than fly. Their
wings are shaped like a leaf of a plant and one
can see hair like fibers on all parts of their
body which is why they are also called moth flies.
I have dealt with drain fly infestations in
many homes which start in the sink or bathroom
shower. The drain lines which have the most
activity seem to be the ones most likely to have
an infestation. I have also observed that homes
with septic tanks seem most likely to get them.
I am not sure if there is some kind of build up
which occurs more with this type of drainage
or if there is something in the tank which allows
these flies to prosper. Although these homes
seem more likely to get drain flies, once the
cycle begins it takes place in the home. I have
encountered several infestations where the larva
were found crawling out of shower or bath tub
drains. The homeowners thought they were some
kind of leach. In fact, the larva of drain flies
thrive in a slime buildup which is on virtually
any drain pipe which is used a lot. This slime
enables the eggs which are laid to be protected
and sheltered. The eggs and hatching larva
embed themselves in this slime so they don't wash
away. The cycle of these flies takes around
a month to complete. Don't waste your time with
bleach or other cleaning solvents. Showers and tubs
which have ceramic tiles may also supply a moist
slimy environment in which they can live. Sump
pumps and wet crawl spaces are other environments
where I have seen them live. Drain flies can be harder
to control than other small flies. Although
there are several products to kill adults, the
key is maintaining and minimizing their breeding
areas. This could prove to be difficult and
ongoing.
Like most flies, there are several products
available for their control. Use a "SPACE SPRAY"
for immediate relief of the adults. There are
several to choose from in the section below.
This will quickly control the adults, but the
secret to getting rid of them is to use a
product we sell which removes the slime build
up on drain pipes. By removing this slime, the
larva cannot develop. This will stop the cycle.
In the "SURFACE SPRAY" section below, look for
the product called SURVIVORS. This is applied
down drain pipes and will remove the nest sights
these flies need. You may also use the product
called PT-CYKICK which is located in the same
section. It is ideal for treating in cracks and
crevices where these flies like to lay eggs. Such
cracks will develop around ceramic tile, windows
and grout joints.
They are difficult to get rid of , I know I was infested for more then three months.
Good luck, Tom
Where'd you copy this from, Tom?
The links to the products are missing.
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