If the area still appears stained spray it again and wait a few minutes before scrubbing.
How to remove stubborn stains from vinyl siding.
Try several different cleaners to find which one works best on the particular stain for your siding.
Dip the scrub brush into the bucket of bleach solution and scrub the stained areas gently.
Apply it allow it to bubble and then brush it off with a wet scrub brush or sponge.
Spray with clean water.
Wipe the area down again with a rag dipped into a bucket of 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.
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.
Rinse the solution off of the vinyl starting from the top so the water will run downward.
Peroxide hydrogen peroxide has also been said to work especially at higher strengths.
Oxygen bleach may remove both oil and water based stain.
For tough spots like paint drips tar and pencil and pen marks use a nonabrasive bathtub cleaner or nylon scrub pad.
Pour whatever solution remains in the sprayer back in the bucket.
For a stronger solution mix together one third cup powdered laundry.
Moisten the area with water and then scrub it using the cleaning solution.