Fuller's earth is any clay material that has the capability to decolorize oil or other liquids without the use of harsh chemical treatment. Modern uses of fuller's earth include as absorbents for oil, grease, and animal waste (cat litter) and as a carrier for pesticides and fertilizers. Minor uses include filtering, clarifying, and decolorizing. Shop our online selection or contact us today for a custom quote. Our knowledgeable sales team is available to help.