It is not an uncommon occurrence for deck stain to splatter onto vinyl siding during application.
How to get dried deck stain off of vinyl siding.
Dip the scrub brush into the bucket of bleach solution and scrub the stained areas gently.
Steps to remove the stain.
Moisten the area with water and then scrub it using the cleaning solution.
Sponge or old cloths.
Any of the butyl cleaners like krud kutter watch your dwell time you can easily make the problem worse.
Wipe the area down again with a rag dipped into a bucket of clean water.
Put an orange oil based cleaner such as orange gojoo hand cleaner on the stain.
Maybe a strong citrus type paint.
Clean magic eraser to remove the deck stain.
Brush the stain gently with a wet soft bristled brush using a circular motion and adding water if the area is too dry for the brush to move smoothly.
Stripper is available at home depot or other hardware stores that sell behr products.
Wear a face mask and rubber gloves to protect yourself from the fumes.
Rub the spot with a clean rag.
Fill a bucket with hot water and either add the cleaner to it or have it ready to go.
Second good choice is to replace the stained siding third is to try some paint remover but that may change the texture finish onthe vinyl by attacking iot also.
Stain on vinyl once it cures is very difficult to remove.
To remove the stain you must strip the color off of the siding.
Put a small amount of paint thinner or deck stain remover on a sponge or rag and wipe the stain off in the direction of the grain imprinted on the vinyl siding.
The pumice in the hand cleaner helps remove the stain without damaging vinyl siding.
Try several different cleaners to find which one works best on the particular stain for your siding.
Step 4 rinse the cleaner off using a hose or pressure washer to remove all residue.
Goof off is a good start.
This research is strictly done for vinyl siding.
If the area still appears stained spray it again and wait a few minutes before scrubbing.
The oil based stains will be gone from your vinyl siding.
The stripper by behr or other stain stripper that is safe for vinyl siding.
It appears the stains on your siding are more of a permanent nature as they re set in over a period of time and not removed immediatley.
Start at the bottom of the stain and work your way to the top.