We've been using this cleaner for over a year now. After 2 cleanings with a period of 2-3 days, you need to clean the filter, then it becomes so clogged that you need to buy a new one. The bottom of the main brush after a month, the soft supports were worn out, now the vacuum cleaner just scurries on the floor. Sometimes it cat litter, and sometimes it cannot grits. Be sure to turn it over after ing the grits, without turning off the vacuum cleaner, otherwise the remnants will fall out. Generally not entirely satisfied.