Originally Posted by fgarriso
Run a white wet rag down your sewage line from the head to the holding tank.
Then if you smell the rag and have a strong sewage smell on it, you hoses need to be replaced.
to clarify you meant to say the outside of the hoses.. the way you wrote it a unsuspecting newbee might read that as on the inside of the hose.. I guarantee it would have a " head" smell then