While they don’t dissolve dog hair, natural fabric softeners like vinegar and baking soda can loosen coarse pet hair that’s wedged into the crevices of the washing machine. This can help wash hair clumps into the washer filter pump or loosen and settle them in the tub to be wiped away.
If you want a washer that helps manage pet hair for you, consider a specialized model like Maytag washers with the Pet Pro System that removes 5x more pet hair from clothes, trapping it in the built-in Pet Pro Filter.1