The best cleaner for marble shower mold won't cause damage to the marble itself. That means it won't be abrasive or acid-based. Using harsh cleansers not suitable for the marble can etch the surface, dulling the polish. Look for a pH-neutral stone cleaner, mix it with hot water, then rinse. Always use soft cloths or sponges when cleaning and drying your marble shower. The requirements for the best cleaner for marble shower mold exclude most common cleaners, such as solutions that contain vinegar, ammonia, lemon, orange, and most of the cleaners designed for bathroom grout and tiles. So what's left?
1. MB-9 Mildew Stain Remover
MB Stone Care has been in business since 1989, focusing on cleaning and maintaining marble and other stone surfaces. The company's Mildew Stain Remover is recommended by The Queen of Clean®, Linda Cobb on Amazon's Askville feature. With this one, you don't even have to scrub! Expect to pay around $16.95 for a one-quart bottle.
Website: MB-9 Mildew Stain Remover
2. Marble Life Shower Mold and Mildew Remover
This Marble Life product was also recommended by Cobb. It's on the pricey side at $19.95 for 32 ounces, but customer reviews suggest that this is a winning product that won't destroy marble while removing the mold.
Website: Marble Life Shower Mold and Mildew Remover
3. Stone Soap Ultra
According to Select Marble, Stone Soap Ultra is the best cleaner for marble shower mold. It has a pH of 7 (neutral) and is meant to be diluted with water rather than applied directly to the marble. There are no abrasives or acids, which is extremely important in the search for the best cleaner for marble shower mold. This product is designed specifically for natural stone finishes. The smallest available size is a one-quart bottle for $26.00, so it will last a long time.
Website: Stone Soap Ultra
4. EcoDiscoveries Bathroom Cleanser
According to Achoo Allergy EcoDiscoveries is the best choice for the environment. It's a "green" cleaner, so while you deep clean your shower, you don't have to breathe in harmful chemicals. Toxic fumes are unhealthy to all, but avoiding them is especially important for asthma and allergy sufferers. It's also inexpensive at $5.95 for 32 ounces.
Website: EcoDiscoveries Bathroom Cleanser
5. A mix of fabric cleaner, water, and the use of a microfiber cloth
Create this cleaner with 1/3 part fabric softener and 2/3 parts water in a spray bottle. You then rub with a microfiber cloth and follow up with a rinse of clean water. This cleaning method is recommended by The Queen of Clean®, Linda Cobb on Amazon's Askville feature.
6. A very small amount of bleach mixed with a bucket of water
This mixture, according to Countertop Specialty, will work in a pinch, but do not use it often because over time it can dull the marble. While this cleaner will remove mold from marble, it is ranked in last place because of its tendency to do damage over time. One of the positives to using this method, however, is just how inexpensive it is. In addition, you're likely to have bleach around the house, which means you don't have to go on the search for a special cleanser. If your shower usually stays mold-free with humidity control, this method could be a viable option for you.