I've had a problem with these little black flies on and off for about
the past year. They are small, about the size of drosopila/fruit
flies, but seems a little too small and agile to be the same.
They usually hang out around the sink. I've tried to keep the sinks
dry and dish free, sprayed with soap or bleach and I've even tried to
make traps out of vinegar & soapy water or honey & soapy water. Both
catch all, but they never disappear completely. They are both bold
and tenacious as hell. You'd think taking a swing at one would make
it flee from you plate - not a chance. You almost have to thump it
off your plate. I have suffered with OCD my entire life and I can
tell you that my house is not mess, dirty or unfit. Yet these flies
persist. I am opposed to the use of pesticides - or should I say I
was opposed to the use of them. I'm almost ready to try anything to
get rid of them. Can anyone help me.
As an aside, I have an aquarium in my house and I don't know if this
could be a source of the problem or not. I'm way in over my head. I
would hate to drain my tank and call a professional, but I'm literally
at my wits end. If you think you can help me, please by all means
tell me what to do.
Find out where they're hatching. Use Sherlock Holmesian deduction or
something like that. That's the key right there.
Every time I've seen little flies they gathered by the sink but came
from the garbage pail or fruit bowl.
Tossing the fruit or taking the garbage out cured it.
I've never had flies breed in my aquariums.
An infestation of small black flies in a house is usually caused by:
1. Most commonly, that your kitchen drain pipe has separated under the
floor and is spilling solids into the crawl space under your floor.
Flies will lay their eggs in that accumulation of soft solid material
and you'll have a continuous source of new flies infesting your house
2. Not taking out your garbage often enough and "fruit" flies laying the
eggs in the soft solids in the garbage can (like apple or banana peels
or discarded animal tissue). So every three weeks you get a new batch
of the little critters emerging from 8 or 9 week old garbage.
I've had this happen to me twice where a tenant in a bottom floor suite
would come to me and ask me to do something about the small flies in his
apartment. In both cases I tell them it's because they're not taking
their garbage out often enough, but in both cases it turned out to be a
separated kitchen drain pipe.
The solids that do down the kitchen drain pipe are just the kind of soft
nutritious stuff that flies look for to lay their eggs in so the maggots
that develop are surrounded by food when they start becoming active.
The old house had a drain that didn't self clean very well. It was a
basement floor drain in cement, which came from kitchen and other bathroom.
I would have to pour clorox down once in a while. Black triangular flies
the seem to lay eggs in stagnant water.
Yeah, if they're coming from your kitchen sink drain, you can buy these
for $1.25 at Dollarama (or I expect any dollar store). You can also
buy them for much more at cooking stores.
It's a stainless steel fine wire strainer that drops into your kitchen
sink drain basket to prevent solids from going down the drain and
causing your main drain line to clog up over time. I'd buy two of them,
fit one inside the other to reduce the gaps between the wires and use it
Do you have a septic tank?
These little flies breed in septic tanks and can enter the house thru
the drains, particularly if a drain trap is not full of water. You
could have something siphoning a trap dry, which is normally caused by
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