The below email from Southern Response about a job on which it engaged Uretek to lift the house is illuminating as to the issues with Uretek. Names and address removed.
Hi [homeowner]
The drains were affected when Uretek returned to do some extra work that was thought necessary.
When they put their delivery unit into the ground at one point it penetrated the sewer line. When Uretek was injected at this one location it went into the sewer line.
After Uretek did the initial leveling the drains were checked and found to be ok.
After Uretek did the extra work the drains were not checked.
The drains were found to be blocked when the toilet would not flush. This was just prior to the date you were supposed to move back to the house, and was just prior to and I meeting you on site.
Regards
[Southern Response]