DIGESTIVE

PROBLEM TO BE SOLVED: To obtain a convenient material which is mixed in garbage, animal feces, or the like, to decompose them into gas, water and a few amount of remains, and decomposes contamination due to feces, feeds, or the like, if sprayed in a fish farming pond. SOLUTION: A compost-like substance is used in which a material having wood as main component is aerobically fermented. Particularly, suitably fermented material has strong performance, thus such the material achieves the purpose. The usage is extremely simple, and it is needed only to mix a material generating odor. In the fish farming pond, the material may only be spread in the vicinity of an agitator or an aerator. It is excellent in a point not to use a specific procedure for exerting effect. COPYRIGHT: (C)2006,JPO&NCIPI