Patented & scientifically proven, this ingenious &8216;miser mesh&8217; guarantees to save you money. Simply place Firemizer&174; mesh beneath your firewood & it will reduce the burn rate of your fuel by up to 33% without any noticeable impact on your fire&8217;s heat output. Firemizer&174; is used in exactly the same way for coal fires & is proven to burn 30% less coal. How does this amazing metal mesh work? By slowing the airflow to reduce the burn rate of fuel & spreading the heat across the fire to ensure that all fuel is fully burnt. The science? Not quite so simple, but basically the mesh is created by fast-cooling special metal fibres at a staggering rate of 1 million degrees per second.