"When using [a] pumice stone [to] clean grills, they're typically used wet, which makes cleaning the grill easier to handle," Shoults says. "Pumice stones are preferred over wired brushes because they are more natural than wire brushes and don't have harmful chemicals, or bristles, like some wire brushes. Pumice is great for not just cleaning grills, but also for cleaning cast iron, stainless steel, and porcelain products."