Using this dust bag holder is easy. Just place it inside your Volta U4202 or U4204 machine where the dust bag goes. It'll keep the dust bag in place while the machine is working. When you're replacing the dust bag, be careful not to damage the holder. If you're removing the old dust bag, don't accidentally throw out the holder with it. To maintain it, keep it clean. You can wipe it with a dry cloth from time to time. If you notice any signs of wear or damage, it might be time to get a new one. Remember, we've been in the appliance parts business for over 25 years, so you can trust the quality of this product.