Zero Waste provides guiding principles for continually working towards eliminating wastes. Terrabon specializes in refining municipal solid wastes and sewage sludge into non-hazardous organic salts. Vacant urban lots are often victim to illegal dumping of hazardous chemicals and other wastes. Starved air incineration is another method used to treat hazardous wastes. Bacteria are also used for the bioremediation of industrial toxic wastes. Most animals have excretory systems for elimination of soluble toxic wastes. Borosilicate glasses are used for immobilisation and disposal of radioactive wastes. Incineration is a key process in the treatment of hazardous wastes and clinical wastes. Infectious disease and parasites are carried via water pollution from animal wastes. The early industries had left many sites contaminated with hazardous wastes. This prevents the hosts from being contaminated by their wastes. There are further provisions describing when and how to dispose of the acceptable wastes. There is some debate in the classification of certain biomass feedstock as wastes. Brachiopods have metanephridia, used by many phyla to excrete ammonia and other dissolved wastes. There was no monitoring or evaluating of the chemical wastes stored under the ground.