The city of Dunkirk wastewater treatment plant is like most around the country, it's experiencing problems with a newer cleaning wipe product advertised as being flushable. It flushes all right but after that it causes a problem in the system. Sean Raynor is the chief operator at the city's wastewater treatment plant. He said the holding tank was recently cleaned of flushables and added if the flushables are allowed to accumulate and make it to the end of plant process they can cause "havoc." Raynor, as have other wastewater treatment plant operators across the country, said the only things that should be flushed are the three Ps. Poop, pee and paper - toilet paper - are what the system is designed to handle.