The integrated leak protection, made of ceramic fiber and wire mesh, ensures safe filling with liquid ethanol. Fire bowls with ethanol burners produce a steady flame and minimal smoke and odor. This allows you to operate the QFlame fire bowl safely and conveniently, especially on sensitive surfaces. Cleaning is also kept to a minimum, as the ethanol burner only needs to be filled and burned out. Unlike a wood fire, there's no ash to remove. This makes operation with ethanol cleaner, safer, and more economical.