it obviously does not replace the good old broom or vacuuming, but it is not sold well either, advertising is not misleading. 28 for I am delighted, I do the cooking and leave it in a room where he carries with him all the dust on my floor. and yes, he bumps sometimes with my foot I release him gently and he leaves. I am surprised that people are surprised that it does not go on carpets: do not push it, it is not either a housekeeper. :)