How to Remove a Toilet Bowl Ring (Hard Water and Rust Stains)
That ring at the waterline is minerals from your water, not dirt. Vinegar and a pumice stone take it off. Here's how.
Bathroom
Hard water, soap scum, mold, and toilet stains.
How to Remove Mold and Mildew From Shower Grout and Caulk
Black spots in grout and caulk are mildew feeding on moisture and soap residue. Here's how to remove it safely and stop it from coming back.
How to Remove Hard Water Stains From Glass Shower Doors
Cloudy shower doors are mineral deposits plus soap scum. Warm vinegar dissolves the minerals and dish soap cuts the scum. Here's the method and how to keep the glass clear.