A:Answer This is the most STUPID design flaw, I thought I was doing something wrong, it takes all the power away from the tool and pet brush attachment, The suction for the attachments is just not a good design. AND why would you want the roller & brush to keep going while your using the tools, Besides wearing out the motor & brush, you could hurt yourself as lifting the vacuum it could catch you or piece of your clothing. The guy who designed this is a true Moron. How hard could be to have a switch to stop the main Rollers & have all power & suction going to tool hose. ?????? Sometimes I think most people are just f....ing stupid. Obviously we have a lot of bright people out there but......some have no common sense. Now I know I will have to return.