When I felted my purse, I unwittingly clogged the drain that the laundry tub empties into. Actually, the lint from the purse just closed the clog, I'm sure. (I have never felted anything before, and I didn't know that you're supposed to put your items in a pillowcase so that the lint doesn't clog the drain! Lesson learned!)
We called a rental place and got a snake to clean out the drain. It worked! We were thankful, because while the snake cost $11 to rent, calling a plumber would have cost over $100! Eeks.
It is nice to do laundry without the basement flooding!