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

There are chemicals you can flush down periodically to stun the roots.
Not terribly toxic, unlike the old days when you would just flush
copper sulfate down. But much more expensive. Otherwise, about the only
other choice is to roto-rooter it every couple of years. The last place
I lived, the clog was so bad that the roto-rooter couldn't rotoroot it
any more, they had to dig out the pipe; it was like solid hardwood
inside for a foot thick. You could see where the auger thing had sort
of ground away at the surface for a while before they gave up. And this
was a big diameter sewer pipe for an apartment building, so we're
talking a lot of roots.