This is an LEC Geki-Ochikun mop with a case. It's for use on flooring. Simply putting the mop in the case keeps it clean at all times. You can throw away the dust collected in the case all at once. It's reusable, so it's economical. There's no need to replace the mop head or attach floor cleaning sheets. The case opens wide, so you can easily discard the accumulated dust. It's been a hot topic on social media, and I bought it and used it a few times, but it wasn't for me, so I'm selling it. I wiped it with alcohol and removed the dust, but I apologize if any remains. I will disassemble it for shipping. Please understand that this is a used item before purchasing.