This rust and mineral remover quickly and effectively removes rust, iron and other mineral stains from linens, either as a spot treatment or when added to the wash wheel. Saves linen replacement costs by getting unsightly rust-spotted linens back into service. Buffered formula for improved user safety. Excellent for use as a carpet brown-out (when diluted) or as a rust spotter (undiluted).Note: This is a non-returnable item.