I work at a public golf course and we can't seem to get rid of the horrible sulfur/sewage smell. It starts in the ladies restroom, from the shower that's in there but is never used, and spreads throughout the clubhouse by mid-day. Some days it's worse than others. A plumber told us to run the shower every couple of days to get the smell out. He said it was probably the methane gases coming up through the shower drain since it's never used. When we run the shower for about an hour it helps a tiny bit, but not enough. What can we do? It's so strong sometimes that it burns my nose just walking into the restroom!

ballengerb1

Sounds like the plumber has the right idea, dried up trap under the floor. Try pouring a gallon of water mixed 1:3 with bleach into the drains in the floor.

labman

Sounds like you need to dig up Tom's recipe for smelly drains. See http://www.askmehelpdesk.com/plumbin...room-6638.html If a trap doesn't have a leak, likely a few minutes of water once a week would maintain the seal.

Also, methane is a common component of sewer gas, but has no smell. Sulfur compounds do.