Abstract: A method of controlling mosquito larvae, by using a spore-forming bacillus ONR-60A obtained from screening clonal isolates from soil samples of known mosquito larval breeding sites. A larvicide comprising the bacillus and a carrier is formulated as a buoyant colloidal suspension which stabilizes just under the surface of the water to concentrate in the feeding zone of many varieties of mosquito larvae.

Abstract: A method of coating chemicals that are used in the control of insects which rotects the chemicals from biodegradation and improves their distribution in insect-containing bodies of water. A fat is mixed with an appropriate solvent, surfactant and chemical to be coated and is heated to a temperature at which relative homogeneity of the solution is achieved. When using a water miscible solvent, the mixture is pressure injected into a body of water as a fine mist under high pressure. A non-water-soluble solvent may be used; in such an instance a suitable solvent extracting process, such as spray drying, is undertaken before the introduction of the material into a body of water. A stable colloid containing the chemical is the final dispersion in a body of water.

Abstract: A method of controlling mosquito larvae, by using a spore-forming bacillus ONR-60A obtained from screening clonal isolates from soil samples of known mosquito larval breeding sites. A larvicide comprising the bacillus and a carrier is formulated as a buoyant colloidal suspension which stabilizes just under the surface of the water to concentrate in the feeding zone of many varieties of mosquito larvae.

Abstract: A method of controlling mosquito larvae, by using a spore-forming bacillus ONR-60A obtained from screening clonal isolates from soil samples of known mosquito larval breeding sites. A larvicide comprising the bacillus and a carrier is formulated as a buoyant colloidal suspension which stabilizes just under the surface of the water to concentrate in the feeding zone of many varieties of mosquito larvae.