Walt wrote:
Apparently my sewer line has a crack about 70 feet out from the house.
Roots are able to get into the line and clogs it up about once a year.
Any one know of fix short of digging up to repair

Unless you want to deal with it repeatedly by having it rooted out
periodically, dig it up and fix it. It won't get better and may get
worse in a most unpleasant way.

R