I am having a plumming dissaster. About every week I have where no matter if I use a sink ,tub ,or toilet I am getting a flow of water that is comming up the sides of the toilet by the floor.I have had a plumer come in and snake the main line from pulling up the toilet to going up to the roof and clearing. All the plumber is saing is that I have roots in my main line. Is this true how do I fix it and can I do it personally and if so how? The plumber wants $4000.00 for redoing the main line!!!! HELP!!!