You can clean vinyl siding with dish soap using a mild solution, a soft brush, and a garden hose, but check the manufacturer’s instructions first to protect the finish.
Essential Concepts
Test a small area; scrub gently; rinse before soap dries.
Related posts:
https://www.bobvila.com/articles/how-to-clean-vinyl-siding/
https://www.bobvila.com/articles/how-to-pressure-wash-a-house/
