I have a friend that’s a plumber, he came out with his 100 foot long drain snake, but apparently I have a really long drain line, He tried hard but could not fix the problem. He said to call Clearwater. So I did and they sent two guys right away. I told them about the problem. They used a special machine called a Jetter which has a 300 foot long line that fixed the problem in less than two minutes. Price was fair, wife is happy.