Posted by John Fasoldt on 16:17:23 5/4/2016 from 22.214.171.124:
In reply to: Sewer Flies posted by brian on 22:11:51 5/3/2016 from 126.96.36.199:
You MIGHT be able to do it yourself... Obtain a can of Gentrol aerosol. It has a straw, use it to get the stuff (it's a foamy stuff) down as far as you can in the drain. Watch out, don't lose the straw down the drain! One can should do it.
Don't use the drain(s) overnight, do this 3-4 times over a week or so.
If this doesn't do it, you might have a break in the soil line. For that you'll need a plumber and it might be expensive.
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