Try several different cleaners to find which one works best on the particular stain for your siding.
How to remove stubborn stains from vinyl siding.
Rinse the solution off of the vinyl starting from the top so the water will run downward.
Dip the scrub brush into the bucket of bleach solution and scrub the stained areas gently.
For tough spots like paint drips tar and pencil and pen marks use a nonabrasive bathtub cleaner or nylon scrub pad.
Wipe the area down again with a rag dipped into a bucket of clean water.
Rinse the sprayer and refill it with clean water.
Start at the bottom of the stain and work your way to the top.
Remove tough stains clean tough stains off with a nonabrasive cleaner or a homemade vinyl siding cleaner of soap and water that won t damage the surface of the vinyl.
If the area still appears stained spray it again and wait a few minutes before scrubbing.
70 water 30 white vinegar makes a great all purpose vinyl siding cleaner that removes light mold and mildew stains.
Apply it allow it to bubble and then brush it off with a wet scrub brush or sponge.
Spray with clean water.
Mouthwash mouthwash is something many swear by for cleaning artillery fungus off of vinyl siding especially mint laced varieties.
Fill a bucket with hot water and either add the cleaner to it or have it ready to go.
Oxygen bleach may remove both oil and water based stain.
Pour whatever solution remains in the sprayer back in the bucket.