Why Your Towels Get Orange Stains That Won’t Wash Out

or mineral stains: A product specifically designed to remove iron or rust from laundry may be more effective than ordinary detergent. Follow the product’s instructions and check that it is safe for your towel’s fabric.
Bacterial or mildew-related discoloration: Wash the towel according to its care label and dry it thoroughly. Address the moisture and ventilation problem that allowed the growth to develop.
Unknown stains: Test any cleaning treatment on an inconspicuous area first.