As a homeowner trying to save yourself a couple of bucks here and there is always in the back of our minds, but we must keep in mind some things are always best left for the professionals. When it comes to cleaning your exteriors of your home you always must keep in mind that the process that is out there in the public is that pressure cleans up these messes, that is far from the truth. Organic mold mildew and algae is not cleaned by using pressure, you must use the right soaps and detergents when removing these molds. Sure pressure will clean it but it will also most likely strip, damage or permanently mark your stones. Hiring power wash unlimited can save you thousands on the back end but it will also save you the aggravation and the stress of not damaging your costly stones.