A method for using a mixture of an organic polymer combined with an inorganic polymer is provided. When the mixture is combined with a liquid material, such as a urine from a patient that is contaminated with a dangerous cytotoxic drug, a multi-step process occurs that sequester the dangers. The combined material forms a stable matrix in which the cytotoxic chemotherapy drug is destroyed. Due to the combination of polymers, the multi-step process will occur without any mechanical mixing or stirring, as the organic polymer facilitates dispersal of the inorganic polymer through-out the combined material.