Shed Pal. This product did not work for me. Maybe others can comment if they had a different experience, but I simply ended up with dog hair all over myself, and very little hair in the Pal.
Suction of the hair occurs at the end of the stroke.
I believe that the tiny rubber bumps are intended to clump up the loose hair into a ball which then gets suctioned in at the end of the stroke. But, the
hair failed to clump, so no hair was suctioned into the container.