Effective Cleaning: Our toilet bowl pumice cleaning stone can easily and quickly clean stubborn hard water deposits, built-up calcium deposits, corrosion and rust stains, hard water stains. It won't scratch your tiles and metal. Eco-Friendly and Safe: Made of 100% natural, eco-friendly pumice stone. It is safe for children, pets, plants, and water, non-toxic, and odorless. It is preferable to chemicals and cleaners as the most effective method for removing stains. Super Convenient: It is a heavy and durable pumice stone that cleans hard water stains on the toilet and keeps your hands free of dirt. The top handle has a hole, after use, it can be hung on the hinge clip for storage. Suitable for most households: The pumice stone is suitable for cleaning barbecue grills, toilet bowls, pool tiles, ceramic appliances, laundry accessories, metal cooking appliances or even dead skin. Notice: 1. Please wet the gray friction pumice stone before using it, it will have a more powerful cleaning