![img_0596.JPG](http://www.cleaningsantacruz.com/wp-content/uploads/2007/03/img_0596.thumbnail.JPG)
Pretty straightforward before and after. This 12 year old aggregate, like most older exposed aggregate takes some finesse to properly clean. In this case, it’s the high GPM coupled with medium/low PSI that polishes(demolishes) these rocks. You’ve been warned!!