One culprit is grout: Over time, it stains, cracks, and becomes loose, even if it was professionally installed. And if the grouting was done poorly to begin with, then the job really isn’t ...
Scrub it with bleach: One of the easiest methods for cleaning grout is to scrub it away with bleach and a regular old sponge. This is especially useful when you’re dealing with mold, but is good ...