Some people said mild dish detergent.
How to clean white metal garage doors.
Working from the bottom panel up wash the steel garage door with a cloth or sponge soaked in the cleaning solution.
Rinse the door with water from your garden hose.
Rinse until water sheets off of the door and no bubbles remain.
Remember to clean in a uniform manner no swirls diagonal lines etc.
White vinegar is a perfect cleaner for your metal doors and it is safe to use.
Begin at the top of the door and allow the spray to run down the door.
One cup of simple green or other non toxic biodegradable cleaner less than 0 5 phosphate into two gallons of warm water or household liquid dishwashing detergent such as dawn.
Clean your door from top to bottom making sure to clean behind the stop molding on the sides and top of the door.
How the door looks clean and wet is how the door will look coated.
Lots of other suggested cleaners included bleach.
Remove all chalk and oxidation wiping with a rag if necessary.
I made an executive decision to use cleaning supplies that i had at home instead of driving to a store to purchase something new.
Spray the entire door thoroughly.
Rinse well and let dry.
If the door is very dirty or mildew stained you can also use a very soft bristled brush.
Wash the garage door with warm water and a mild detergent.
Scrub it with a rag or nylon scrub brush.
When washing the garage door use one cup of nontoxic biodegradable cleaner mixed with two gallons of warm water.
Spray the surface of the metal door with the soapy mixture or tsp.
Using a clean bucket mix a small amount of dish soap or car wash soap preferred with water with a soft sponge or cloth apply the soap to the door in a circular motion rinse off with garden hose for steel or fiberglass doors apply a light coat of spray car wax.