-It is designed to penetrate, dissolve and remove odour-causing residue that can occur in all washing machines. Make your machine work brand new! -Safe to use with Front Load Washing Machines and Top Load Washing Machines - High Efficiency and Conventional Washers. -Specially formulated tablet dissolves slowly, lasting throughout the entire wash cycle and breaking up residue better than bleach. -Contains biological enzymes to effectively remove the dirt and odour generated by fermentation and has a continuous cleaning effect. FOR BEST RESULTS USE ONCE A MONTH TO KEEP YOUR MACHINE FRESHER AND CLEANER!