Many cleaning professionals visit the International Custodial Advisers Network (ICAN) Ask the Experts page for insight and, every business day, we deliver advice to better help you perform your job.
How do you remove the black stains on anti-slip spots that are on the bottom of tubs?
Thursday’s Answer:I’m guessing that the black discoloration is from mold or mildew growing on or under the stick-on spots which tend to hold moisture and soap scum on their rough surface.
Try a mild bleach or hydrogen peroxide solution, if that doesn't work, try a vinegar and baking soda combination, or any of the dozens of mold/mildew sprays available commercially.
Let the product dwell, keeping it wet for 10 to 15 minutes. Scrubbing peroidically with ... Lynn E. Krafft, ICAN/ATEX editor
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