When you get your new one after using the tub remove the rubber mat and roll it in a towel to dry it.
Bath mat mold removal.
If you d rather not spend your bathroom cleaning time scrubbing mold and mildew from your bath mat be sure to hang it after each use.
Clean the mat with a brush.
To eliminate mold or mildew leave the rubber bath mat in the diluted bleach solution for 3 4 hours.
Wet the brush and scrub the entire mat thoroughly scrubbing the stains several times.
Mold is mainly responsible for creating stain the rubber bath mat.
Steps to remove stains from the rubber bath mat.
Place the bath mat in the tub or shower and sprinkle the top part of the mat with laundry powder or powder bleach.
If your bath mat has become a victim of mold and mildew you have several recourses.
Prepare a solution of 1 cup of white vinegar and 2 cups of hot water.
Place the mat in the washing machine and set the machine to a gentle cycle setting and the water temperature to a warm or hot setting to kill any existing mold mildew or bacteria on the bath mat.
When thoroughly dry no mold will grow.
So at first start the cleaning by removing the mold.
A brush with tough bristles and a long handle works best.
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.
Sorry to say there is no easy way to keep your mat mold free other that to keep it completely dry when not in use.