The Cyclone Dirt Trap Bucket Insert helps eliminate wash swirls and scratches by filtering dirt and grime from your wash water and capturing it below nearly 300 geometrically positioned dirt trap cyclones. The Cyclone Dirt Trap is engineered with the perfect balance between cone size, dirt aperture, strategic placement, funnel pitch and depth for maximum particle capture. Don't let dirty water cause scratches and swirls on your car's paint - use a Cyclone Dirt Trap every time you wash your car.