I am fighting with my 12DS as I type to run the sweeper. We have one afternoon a week of what I call "massive housecleaning". Everyone has their jobs to do and we all have to work together until you get your jobs done. I have tried everything from paying them to clean to charging them when they don't clean, job charts ,you name it I've tried it. So far after 15 years this really works the best because everyone works at the sametime, and if you are slacking everyone knows it. Everyone is done now except DS and he is sweeping as I type.