Confirmed with customer that men and women’s bathroom are backing up. Provided estimate to attempt to clear mainline. Used cable through mainline from outside clean out retrieving paper blockage. Mainline is now draining properly. Used camera through clean out finding pocket knife stuck 60 -70 feet from outside clean out. Located area 6 feet below concrete. Provided estimate to attempt to retrieve item as well as estimate to cut out concrete removing section of piping with lodged item. Customer wanted to attempt to retrieve item. Used cable through drain multiple times and was able to retrieve pocket knife. Thank you for choosing CPI Plumbing and Heating. ATTEMPT ONLY