The slippery guard is a non-slip spray that can be sprayed over an area of about 0.8 to 1.2 cm per can (when applied twice). It has excellent adhesion to granite, natural stone and porcelain tiles, and can be used for metals such as aluminum stepladders and standing horses. It can also be used to prevent slippage at the entrance of ordinary houses, and the effect lasts for about 2 to 3 years with a single application.