May 11, 2015 5:10 pm How Well Do Robotic Vacuums Work? The makers behind robotic vacuums have promised they would clean your floors while you’re away. So how well do they work? NBC 7’s Consumer Bob shares the results. US & World Videos 0:28 A Vermont state trooper plunges into icy pond to rescue 8-year-old girl 2:59 Keep these travel etiquette tips in mind this holiday season 2:20 Bodies of Missing Men Found in Rubber Bins Inside Storage Unit 1:42 Hundreds of Golden Retrievers Walk a Mile for the Official Boston Marathon Dog 1:51 Typewriter Shop Owner Receives Gift From Tom Hanks