คุณลักษณะ

• This is a pumice-like, environment-friendly jar made by melting and foaming recycled glass at high temperatures. When you step on it, the stones rub against each other and make a loud "jari jari" sound, so you can easily take security measures. It is used by laying about 4cm thick in areas where you do not want to be invaded. Use approximately 40 L per 1[[square meters]]. It has been baked so it is clean. Not only for crime prevention measures, it can also be used as a weed prevention effect, cold damage prevention, and pot bottom stone.