Glazed and terra cotta containers are hand made from natural clay using traditional artisanal techniques and high-fired at temperatures between 990-1000 °C to ensure frost resistance and durability. Glazed containers are coated with natural glazing elements that are baked onto the surface to enhance the products' resistance to weathering. Most of our outdoor glazed pottery can be used in the design of custom water features. For quality control, these natural clay containers are rigorously tested in freeze-thaw conditions. Our glazed and terra cotta containers are appropriate for use indoors and outdoors with proper planting and care in regions where freeze-thaw cycles exist. Cleaning Instructions Glazed and terra cotta containers can be cleaned with either mild soapy water or Windex with Ammonia-D. Spray down the surface of the container where it is dirty and use a lint-free cloth or sponge to wipe the surface. It may take several cycles of wiping and drying before the container is completely clean. Do not pressure wash, use alcohol based cleaners, apply corrosive cleaners, or clean with anything abrasive.