i BOUGHT THE SHARK ROBOT A MONTH AGO AND AM SO HAPPY WITH IT. WE HAVE PUGS THAT SHED LIKE CRAZY, MY FLOOR IS TILE AND YOU WERE ALWAYS PICKING UP THE DOG HAIR ON YOUR FEET.  NO MORE MY ROBOT KEEPS MY FLOORS CLEAN. MY HOUSE IS OVER 2400 SQ. FEET AND I AM 78 SO VACUUMING EVERY DAY WAS A HASSLE.  THANK YOU SHARK FOR MY ROBBIE THE ROBOT