My kitchen sink was clogged. I worked on it all night last night. Came home at about 1:00 today to work on it. I tried some Thrift on the clog. I have never had it fail to unclog a drain until it met its match with this clog. So, Thrift didnt work...what to do? What would any self-respecting carpet cleaner do? Call a plumber? Nope! I went and got the porty off the truck. Disconnected the Ptrap. Connected the 1.5" to the pipe and turned the porty on. No luck. Call the plumber? Nope. I pulled the truck up to the door and pulled the hose in. Started the TM. Connected said hose to the pipe..POP! Some big wad of something came out. I wish i had a sight tube so i could have seen what it was. I may offer the service to plumbers.