Harness, Dickey & Pierce
Cellulase, sodium bicarbonate and citric acid cleaning solution and methods of use
 A composition and process for the degradation of fibrous materials is provided. More particularly, a composition comprising cellulase, sodium bicarbonate and citric acid, wherein the combination of sodium bicarbonate and citric acid unexpectedly increases the cellulase activity and thus improves the breakdown of toilet tissue in waste holding tanks, is set forth. The composition of the present invention may also include other additives known to those skilled in the art. 
Thetford Coporation
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Mary R. Martha K.
Burrows Johansson