The patented Dirtguard Auto Wash System is designed so that you are using the cleanest mit and water at all times. A must if you care about your vehicles paint, especially dark colors!

It's not just a strainer. The filter below the grill actually traps dirt and other particles, prohibiting water circulation from stirring them back into your wash water. The filter is easily rinseable after your wash, and reusable time after time!