Posted by John Fasoldt on 21:13:35 6/9/2015 from 220.127.116.11:
In reply to: Sewer flies posted by Brittany on 19:47:40 6/9/2015 from 18.104.22.168:
Yeah, this is the right forum... I answer 'em anyway, right or wrong! (Or TRY to!)
The sewer flies could be easy to fix, or it could be expensive and hard. Let's hope for the best!
First of all, let's try to determine where they're coming from. Don't count on tape, put a glass over the drain and leave it overnight. Examine the glass CLOSELY. You might have to leave it on over a longer period, it depends.
Once you figure out which drain(s) to treat, pick up a can of Gentrol aerosol. You can get it online, it isn't restricted, you can get it at many online DIY places, you probably can't get it locally. You only need one can unless you have dozens of drains to do. It isn't expensive, about $13 (or so) per can, not counting the shipping. Amazon probably has it.
It comes with a straw, like on cans of WD-40, you'll need that. READ THE DIRECTIONS! Insert the straw down the drain, extract it as you're injecting the foam - it comes out as a foam. At the same time, hold onto the straw, it has a tendency to come off as you spray the foam into the drain and you'll have a hell of a time finding it or getting it out!
After you do this, try not using the drain for at least 12 hours. The longer the better. If you go away on vaca, do it just before you leave.
The product is a growth regulator, not an insecticide. In sewer flies, it affects the way they develop, not allowing them to develop into adult flies.
Now the bad news... If two or three applications don't work, you probably have a broken soil line. Which is usually expensive and difficult to fix. The line has to be dug up and replaced, no amount of chemicals will cure it. It will take a plumber to do this job, a GOOD plumber.
Talk to your insurance agent (homeowners) some of that kind of problem might be helped by him.
Good luck, let us know how it goes!
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