Smoke damage restoration, Graffiti removal and Monument cleaning are just a few of the many types of exterior applications. Media blasting removes paint and contaminate without harming substrate surface. It is Non-Destructive Abrasive that eliminates Toxic Chemicals...Cleans Machines that are on and off line...Is User Friendly...Is Portable...Is Environmentally Safe...Can be used Wet or Dry... Needs no Sanding, Soaking or Scrubbing.