Wednesday''s Ask the Experts question from a cleaning professional on the International Custodial Advisors Network (ICAN) "Ask the Experts" page: I am having a problem with cleaning ceramic tiles in the restrooms due to a previous housekeeper''s error in judgement. Toilet bowl cleaner was used to clean the floors and has left spotting on the floor. They then tried to cover up the problem by putting down a floor finish to no avail. What can I use to get the floor back to, or near, its original finish?
The original finish was probably none, so you may wish to start by stripping whatever was put down. I can''t say for certain, obviously, but I suspect the toilet bowl cleaner was a hydrochloric (HCl) acid based one and it dissolved whatever grout film was left on the tiles when they were ... — Lynn E. Krafft, ICAN/ATEX editor
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