Pratt General Purpose Floor Sweep is manufactured from a special selection of organic cellulose products. These naturally occurring fibrous materials are blended, dried, densified that quickly absorb a wide variety of liquid including petroleum, oils, fuels, solvents, cooking oils, sewage, protein fluids and other messy liquids that could pollute or contaminate the work area and the environment. These absorbents, however should not be used on strong acid or alkaline solutions. Because of its strong “wicking effect” it is able to rapidly encapsulate liquids so that they cannot leach back into the environment.