Those “spots” on your vinyl siding can be very tough to remove (and hard to photograph . Those “spots” are an artillery fungus that is normally found in mulch. The horrible thing is if you don’t clean it/kill it you will see more and more spots on your vinyl siding home. Pressure washing alone will not rid you of your spot problem. There is a special detergent needed to clean you out of this spotty mess and restore your siding back to its old glory. Combine that detergent with pressure washing and you’ve got yourself the perfect spot eliminator.
Pressure washing your vinyl siding twice a year to keep those spots and other stains away. If you don’t want to, can’t, or don’t know how to pressure wash. Your local pressure washing company will be glad to take care of you and they usually are faster plus yield greater results than you do.