Add 1 teaspoon (4. 9 mL) of chlorine bleach to 1 gallon (3. 8 L) of water for normal cleaning. [5] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source Add 1 cup (240 mL) of chlorine bleach to 5 gallons (19 L) of water for heavier cleaning. [6] X Trustworthy Source Centers for Disease Control and Prevention Main public health institute for the US, run by the Dept. of Health and Human Services Go to source As an alternative to bleach, make a solution of 1 cup (240 mL) of white vinegar and 1 cup (240 mL) of water and use it to scrub the mat. Or, fill the tub or basin with equal parts vinegar and water and allow the mat to soak.

To eliminate mold or mildew, leave the rubber bath mat in the diluted bleach solution for 3-4 hours. To freshen up the bath mat with a quick clean, scrub the rubber bath mat with a cleaning brush or scouring pad to remove dirt and debris after soaking for a few minutes.

Do not put the bath mat in the dryer as the heat will warp it!

Include other, sturdy laundry items appropriate for washing in laundry detergent and chlorine bleach, e. g. , white towels, should be added. Do not add items which may be damaged easily or by bleach. [9] X Research source