A short video showing the dirt and road grit/salt coming out of the arches after a week of snow fall. The attachment is an underbody lance that connects to a pressure washer (In this case a Karcher Professional unit, but they do sell other fittings) from Autobrite Direct (http://www.autobritedirect.co.uk).
Just shows how much dirt can get trapped in there as they were initially rinsed when the car was foamed.
Cleaning out the arches regularly helps to stop the build up of dirt which traps water and increases the risk of them rusting. All of our services include a thorough underbody and arch clean – perfect to prevent dirt build up after a harsh winter.