Using this water bottle cage is super easy. Just slide your water bottle into the cage from the right side. It's designed to hold the bottle securely so it won't fall out while you're riding. When it comes to cleaning, simply use a damp cloth to wipe it down regularly. Make sure to keep it dry to prevent any rust or damage. As for where to use it, it's great for both mountain and road riding. However, avoid putting extremely heavy or oddly - shaped bottles in it, as this might affect its performance and durability.