Washington State University research shows that washing cloth parlor towels in cold water without bleach and without using a dryer results in the highest mastitis-pathogen counts among eight different laundering methods.
The researchers recommend using one of these methods to launder cloth towels:
Wash the towels in hot water with detergent, dryer use optional.
Wash the towels in cold water with detergent and bleach, dryer use optional.
Wash the towels in cold water with detergent, follow with dryer use.