Mark Jameson Chimney Contractors clean gas and oil heating flues, fireplaces and woodstove chimneys all types of blockage removal: Nests & pests removed, chimney collapsing in creosote removal tools & odor removal for bad smelling fireplaces We use stainless steel from top to bottom for prefab fireplaces Mark Jameson Chimney Contractors use the correct size and type of brush. For chimneys that have collapsed in we have special tools for unblocking the debris.