We live in a brand new townhouse.. have been here 4 months. We found out a month or so ago that our lines were clogged, due to baby wipe flushables in the lines. We had roto-rooter come in and snake the lines. Now, after a month or so we are smelling horrible sewer gas smells. They are very strong in the basement garage, where I believe the drain to the septic system is but they are also in our Master Bath. Before we had the lines snaked, sewer was backing up into the main tub and master tub. Could there be growth in there that is smelling up the place? How do I get rid of that?

Do you have a floor drain in your basement? Let me know, Tom