I read the reviews and when I received it I read and followed all the instructions. My only goal was to clean my Primo oval grill. Because of this, Revane states that there will be no returns. I think most people would prefer to return that. Pros: The device is compact, easy to assemble, carry and store. It is cheap. Bad: clean and simple, it doesn't work. Vacuum is sucking. This is hardly enough to collect very fine ash particles. Bean-sized chunks of unused coal are too heavy! If he pulls a few, they stay in the hose and never get into the tank. The crevice tool is made of aluminum and is difficult to maneuver around corners and not at all ergonomic in terms of manoeuvrability. After use, the inside of the hose is covered in fine ash that falls onto my decking surface when I disconnect it from the tank. I rarely advise against buying a product, but in this case I would advise.