content: I'd be happy with this cleaner if only it didn't cease to function. The first lasted under three weeks of thrice-weekly use. The seller replaced the unit and the replacement lasted about 6 months.The failure mode is like this: the unit works normally for a period of time between say 1 second and 2 minutes. Then 5 is added to the timer several times until the value on the display is over 20 and the unit switches itself off. So it seems like the controller is going crazy. No matter, the cleaner is useless to me.