The Hotspot Fireplace Cleaner is a highly effective solution for removing stubborn smoke, soot, and tar stains caused by wood, coal, and gas fires. It is safe to use on a variety of hard surfaces including brick, stone, concrete, and marble. This cleaner works by creating a foam that penetrates deep into pores through brisk brushing, without causing damage. It is an acid-free formula and an excellent alternative to harsh chemical cleaners. For best results, ensure the surface is cool before application and protect surrounding areas such as floors and carpets by removing screens and fixtures.