Teenage boy who likes to take "long showers" in the house?
J/K. Actually I bet its detergent. Somewhat related to this, I just finished getting a new septic bed installed this week and the owner of the company told me the dangers of Tide. He specified Tide detergent. Said it will plug lines really bad from "the phosphorous" in the soap. He said, our lines were very clean when he scoped them, asked what we use. We use Persil powder from Germany and never have issues with our washer smelling or other problems..