A novel dietary supplement or therapeutic composition is provided that serves to treat lower urinary tract disorders or to support normal urinary tract function in animals. This invention presents mesMophilic and thermophilic digestion in concert, wherein mesophilic digestion incorporates strains of Thiobacillus with nitrifiers to remove sulfide and ammonia from bio-solids. In another aspect, both CW and TD measurements are synergistically combined to estimate optical properties of the medium used in image reconstruction.