The bristles are just too soft. If I am going to pull out the scrubber it is for restoration. Most of the guys who prefer pads over brushes have never had the right stiff brush. A good brush will need to be broken in by running on concrete for 30-60 minutes to break in. You can get better results just running a damp bonnet than the adjust a glide. The adjust a glide might be good for delicate rugs but not for scrubbing traffic lanes.