The award winning fuel saving device optimizes the performance of fuel in solid fuel fires & stoves. - Firemizer can save up to 38% of your fuel by slowing the burn rate & reducing airflow to allow heat to spread evenly across the fire for longer. - Firemizer also limits emissions & reduces the build-up of potentially dangerous soot in chimneys. - Easy to use and lasts up to 500 burn hours. - Just remove the Firemizer from its pack & place it on the base or grate of your fire or stove. Then build the your fire with wood &/or coal as usual on top of the Firemizer. - For best results Firemizer should cover the base of your fire or stove. It can be cut to size with scissors or for larger fires 2 Firemizers can be used side by side. - Independently tested by Cambridge & Nottingham Universities, GASTEC at the CRE.