Actually, rock salt will kill the roots. BUT you still have to have them
cut out by the plumber dude with the snake machine.

s


"Gen" wrote in message
...
We have a slow sewer line between the house and the street.
It's almost certainly roots. I read somewhere that roundup can
kill those off, so I flushed a couple of gallons of roundup down
the toilet. How long before it has an effect?