Determine if your bath mat is machine washable by reading the care instruction label on the mat. Most mats are machine washable -- whether the mat is a fuzzy floor bath mat or a plastic shower bath mat -- but take extra care with mats that have features such as a high-shag surface or rubber backing, as they might deteriorate or break down during wash or high-heat dry cycles.
Helping to eliminate slips and falls in the shower, plastic bath mats lie along the bottom of the bathtub and provide extra protection against accidents. Unfortunately, the constant dampness on the bath mat provides positive growing conditions for mold and mildew. If not removed, the mold and mildew will stain the mat and leave an unsightly slippery film on the surface.
Take the plastic bath mat outside and use a water hose to rinse surface debris off both the top and bottom of the mat. Hang the bath mat in a well-ventilate area to dry after you have thoroughly cleaned it with one of the mold and mildew removal methods.
The same product used to get your dishes sparkling clean with remove the fungus and leave the plastic bath mat from dirt and grime. Pour 1 gallon of lukewarm water in a 5-gallon bucket. Add 1/4 cup of dish soap to the water and stir vigorously with a whisk until suds appear. Submerge a soft-bristle scrub brush in the soapy water and begin scrubbing the mold and mildew off the plastic bath mat. Rinse the bath mat clean with the water hose.