I have a lightly used lower level BR (shower, toilet, lav) and it is produces a swampy smell that speads to the whole finished basement.
-I have a healthy septic system, 10 years old, just pumped out in summer.
-the BR and wet bar empty into a covered ejector pit which is vented.
- I keep water in the P-traps.
-I flush the toilet and run the shower once a week but the smell comes back.
-I caulked the lid of the pit.
-I dropped a little bleach in the pit, but this worries me because of the septic. The smell comes back the next day.
-I am stumped and frustrated.
Thanks in advance.
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