(US5961733-A)      A cleaning tank (10) for removing organic matter from a component by circulating a fluid (72) from a holding tank (44) to a basin (14) which receives the component, has a biological component within the fluid for biodegrading the organic matter. Also claimed is a cleaning solution containing microorganisms capable of biodegrading organic matter, the microorganisms living with a surfactant. Also claimed is a method of removing hydrocarbons from a component by brining it into contact with a fluid which has microorganisms suspended in it, and allowing the microorganisms to biodegrade the hydrocarbons.    USE -   For cleaning of components, e.g. automotive valves, pistons, covers and transmission elements, which have been contaminated with hydrocarbons, oils and greases.    ADVANTAGE -   Production of hazardous wastes is reduced. Fluid replacement is infrequent. The cleaning fluid is not volatile or flammable and is not toxic to users. No automatically-closing fire lid is required. Organic waste is broken down into non-contaminating components. Filters are easily replaced.    (US6019110-A)      A cleaning tank (10) for removing organic matter from a component by circulating a fluid (72) from a holding tank (44) to a basin (14) which receives the component, has a biological component within the fluid for biodegrading the organic matter. Also claimed is a cleaning solution containing microorganisms capable of biodegrading organic matter, the microorganisms living with a surfactant. Also claimed is a method of removing hydrocarbons from a component by brining it into contact with a fluid which has microorganisms suspended in it, and allowing the microorganisms to biodegrade the hydrocarbons.    USE -   For cleaning of components, e.g. automotive valves, pistons, covers and transmission elements, which have been contaminated with hydrocarbons, oils and greases.    ADVANTAGE -   Production of hazardous wastes is reduced. Fluid replacement is infrequent. The cleaning fluid is not volatile or flammable and is not toxic to users. No automatically-closing fire lid is required. Organic waste is broken down into non-contaminating components. Filters are easily replaced.    (US6044854-A)      A cleaning tank (10) for removing organic matter from a component by circulating a fluid (72) from a holding tank (44) to a basin (14) which receives the component, has a biological component within the fluid for biodegrading the organic matter. Also claimed is a cleaning solution containing microorganisms capable of biodegrading organic matter, the microorganisms living with a surfactant. Also claimed is a method of removing hydrocarbons from a component by brining it into contact with a fluid which has microorganisms suspended in it, and allowing the microorganisms to biodegrade the hydrocarbons.    USE -   For cleaning of components, e.g. automotive valves, pistons, covers and transmission elements, which have been contaminated with hydrocarbons, oils and greases.    ADVANTAGE -   Production of hazardous wastes is reduced. Fluid replacement is infrequent. The cleaning fluid is not volatile or flammable and is not toxic to users. No automatically-closing fire lid is required. Organic waste is broken down into non-contaminating components. Filters are easily replaced.    (US6074491-A)      A cleaning tank (10) for removing organic matter from a component by circulating a fluid (72) from a holding tank (44) to a basin (14) which receives the component, has a biological component within the fluid for biodegrading the organic matter. Also claimed is a cleaning solution containing microorganisms capable of biodegrading organic matter, the microorganisms living with a surfactant. Also claimed is a method of removing hydrocarbons from a component by brining it into contact with a fluid which has microorganisms suspended in it, and allowing the microorganisms to biodegrade the hydrocarbons.    USE -   For cleaning of components, e.g. automotive valves, pistons, covers and transmission elements, which have been contaminated with hydrocarbons, oils and greases.    ADVANTAGE -   Production of hazardous wastes is reduced. Fluid replacement is infrequent. The cleaning fluid is not volatile or flammable and is not toxic to users. No automatically-closing fire lid is required. Organic waste is broken down into non-contaminating components. Filters are easily replaced.    (US6095163-A)      A cleaning tank (10) for removing organic matter from a component by circulating a fluid (72) from a holding tank (44) to a basin (14) which receives the component, has a biological component within the fluid for biodegrading the organic matter. Also claimed is a cleaning solution containing microorganisms capable of biodegrading organic matter, the microorganisms living with a surfactant. Also claimed is a method of removing hydrocarbons from a component by brining it into contact with a fluid which has microorganisms suspended in it, and allowing the microorganisms to biodegrade the hydrocarbons.    USE -   For cleaning of components, e.g. automotive valves, pistons, covers and transmission elements, which have been contaminated with hydrocarbons, oils and greases.    ADVANTAGE -   Production of hazardous wastes is reduced. Fluid replacement is infrequent. The cleaning fluid is not volatile or flammable and is not toxic to users. No automatically-closing fire lid is required. Organic waste is broken down into non-contaminating components. Filters are easily replaced.