Smelly Drain in Shower
I was wondering if any knows how to get rid of a smelly drain in the shower. It smells like old moldy cement. It temporarily goes away if I pour laundry detergent down the drain but I am looking for a permanent fix... I have already tried to seal the grout and no avail. I also tried bleach but that only worked for a little while as well then left some color damage to the drain catcher.
Any words of wisdom?