As a professional organizer I vacuum A LOT and find this attachment very useful. The standard dusting brush that comes with your vacuum has a smaller opening and over time the bristles will curl and fill more of the opening. I used to take a pair of scissors and cut off the bristles of the brush to keep the hole clean. Then I discovered this product which has a much larger opening, shorter bristles and is the most effective. I still have the smaller one for more detailed work, but it works great for erasing large amounts.