Run k400 in closet bend to clear mainline backup. Customer was experiencing a partial blockage affecting only one side of the house. House is on a septic system. Other fixtures did not affect problem drains. Customer also popped lid on septic tank and there was flow. Ran k400 cable In closet bend to clear blockage. Brought back an abundance amount of soft tissue. We were able to successfully clear blockage. Set toilet on wax ring and tested for leaks. Clearing successful. Recommended customer to call us back out if blockage occurs again and if so we’ll set up a camera inspection.