An inexpensive jute-based scenic fabric, resembling burlap but having a much more open weave and thicker fibers. Caution: NOT inherently flame retardant. Must be painted or flame-retarded before use on stage. http://www.bagsupply.com/jute-erosion-cloth.html Available from landscape companies, or most theatrical fabric suppliers, such as http://www.rosebrand.com/product277...ural-NFR.aspx?cid=160&idx=5&tid=1&info=Burlap . [SUP]1[/SUP] I was once told that the insecticides and preservatives made it flame-proof. Boy were they wrong when a flashpot caught the untreated erosion cloth on fire!