Most moss walls are made of preserved moss, which is no longer living. Moss Pure is the world's only company to use living moss as a decor piece and patent pending air filter and stress relief device. No watering or maintenance is needed. The reason why is that our proprietary science and design creates a living environment for our live moss within our products, creating an ultimate and certified air filter capturing 300,000 ppm of carbon dioxide and millions of pollutants such as dust, allergens, VOCs, metals, odors, toxic gases, bacteria, and viruses. All while being a stunning decor piece in your modern business and home.