You can use bleach to kill any mold on your rubber bath mats.
How to wash rubber bath mats in washing machine.
If you do not want to wash your shower mat by hand you can easily use a washing machine to do all the hard work for you.
How to remove bath mat stains from bathtub.
Place your bath mat in a washing machine with a few other soft items such as towels or washcloths these will serve as scrubbers in the washing process.
If you are treating for stain removal let washer fill with water before adding any additives other than laundry soap.
Hang your mats outside to dry or tumble dry on the lowest setting.
After the bath mat is done being washed just hang it up to air dry.
The rug needs plenty of room to move freely in the wash.
No scrubbing no mess and a very clean bath mat.
About 1 2 cup per load.
Set the machine for a large load on the delicate cycle even if you re only washing the rug and a couple of towels.
Wash your bathroom rugs on the cold setting with a gentle laundry detergent.
If needed you can add baking soda for odor removal and borax to help disinfect bath mats.
In the bathtub combine 1 cup of bleach per 5 gallons of water then let the bath mat soak for a couple of hours before scrubbing it with a scrub brush.
Throw your rubber bath mat in the washing machine with a couple of bath towels and then add your normal laundry detergent.
Place bathmats in the washing machine add laundry soap and use a gentle cold water setting.
Set the machine for a gentle hot cycle.
You should never use heat when drying plastic or rubber backed bathmats because it can cause the backing to crack or even melt.