Yes, it can be misted, but be careful and don't apply too much. A light mist is all that is needed. If you overspray and the chemical runs, it will "clean" the siding and make it appear splotchy and dirty. This is due to mold and dirt that naturally accumulates on the siding. If this happens, you will need to "soft wash" your siding with bleach and some soap. There are numerous videos on YouTube on how to Soft Wash vinyl siding.