Designed to penetrate, dissolve and remove odor-causing residue that can occur in all washing machinesEXTENDS LIFE OF WASHING MACHINES: For best results use cleaner every 1 to 3 months or as needed to extend life of washing machine.PRACTICAL & VERSATILE: Remove soil, mineral, and detergent residue that may accumulate in the washer over time, prevents the build-up of malodor, which can be transferred to your laundry, and leaves behind a fresh scent and a clean washer.Works on both high efficiency and non-high efficiency machines: Safe to use with Front Load Washing Machines and Top Load Washing MachinesWARRANTY & ASSURANCE: We are committed to customer service and maintain 100% customer satisfaction guarantee. If you have any questions, feel free to contact us, we will reply within 12 hours and make you satisfied.