Don’t allow the solution to dry completely on the siding. If the weather is hot or sunny and the surface begins drying quickly, lightly mist it with water as needed.
The waiting period is important because immediately rinsing the surface may not give the solution enough time to loosen the algae.
7. Rinsing It All Away: When the Algae Practically Falls Off
After the solution has had time to work, rinse the siding thoroughly with a garden hose, starting at the top and working downward.
Use gentle water pressure rather
