"Why is my Roomba not cleaning my carpet?"に関する回答What’s your Roomba model? Old Roomba models 600 and 700 series came up with the brushed dirt extractors, they can damage your carpets and also their suction can’t pick up the dirt hair effectively compared to the high end models like 900 series. You have to consider so many things while going for a robot vacuum for cleaning carpets. I hope this guide will help you when you want to switch to a new roomba model.