The best way to PREVENT fungus from growing is to maintain an environment
that doesn't support its growth. You need to keep everything very dry,
maintain good air circulation, and provide lots of sunlight. That's pretty
hard to do in a Florida bathroom. You need to kill the fungus that is
already established. I use a solution of bleach and water. An alternative
method is to use steam.
To clean mold/algae...
Household bleach. Use 1/2 cup (or 3/4 cup) to a gallon of warm water
with a teaspoon of dishwashing liquid. Spray on, wait 10 minutes,
then rinse in cool water. If the algae and mold have been there for
awhile, you'll need to replace "wait 10 minutes" with "scrub lightly."
Use plenty of ventilation and rubber gloves.
To prevent mold/algae...
Keep the bathroom dry. Use the bathroom fan for 20 minutes after
bathing. Dry the walls after each use. If possible, let the sunshine
The citrus-packing industry has found that if you add equal parts of
baking soda and household bleach to your wash water, that makes an
excellent disinfectant, and it's easy on the hands.
Borax is another approach. A quart of water will dissolve a couple of
tablespoons of it. I like to add a little ammonia. It will clean the
spots pretty well and if you don't rinse, the trace of borax will
inhibit regrowth of microorganisms.
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