Tampa Bay's water comes with a generous helping of dissolved calcium and magnesium. When the water evaporates, the minerals stay behind — that's the cloudy film on your shower door, the white crust around the faucet, and the rings in the toilet bowl. It's not dirt, so ordinary soap won't touch it. You need a mild acid.
The two-ingredient fix: vinegar + baking soda
- Heat one cup of white vinegar for about 30 seconds in the microwave — warm vinegar dissolves minerals noticeably faster.
- Spray or sponge it on the glass or fixture and let it sit 10–15 minutes. For vertical glass, soak paper towels in vinegar and stick them to the surface so it stays wet.
- Make a paste of baking soda and a little water, and scrub gently with a non-scratch sponge. The fizz is harmless — it's doing the work for you.
- Rinse and dry completely. Drying is the step everyone skips, and it's why the spots come back by the weekend.
For heavy, years-old buildup
If vinegar only gets you halfway, step up to a commercial calcium-lime-rust remover (follow the label and ventilate well), or use a damp fine-grade 0000 steel-wool pad on glass only — it's soft enough not to scratch glass but will scratch acrylic, plastic, and coated fixtures, so test a corner first.
Watch the surfaces: vinegar and other acids can etch natural stone — keep them off marble, travertine, and granite vanities. Wipe up overspray immediately and use a stone-safe cleaner on those surfaces instead.
Keeping it away
- Squeegee shower glass after each use — 30 seconds, no spots, ever.
- Spray a daily shower mist (or a 1:3 vinegar-water mix) a few times a week.
- Dry faucets and fixtures with the hand towel when you're done at the sink.
Pro tip: rub a few drops of rain-repellent glass treatment (the kind made for car windshields) onto a clean, dry shower door. Water beads and slides off instead of evaporating in place — our crews use this trick on glass that clients want to stay showroom-clear.