Meguiar's Grit Guard greatly reduces potential scratches and swirls on your car, truck or SUV. This is accomplished thanks to the radial agitation grid design that removes dirt and debris from the wash mitt. Meguiar's grit guard is simple to use just drop into the bottom of your soap bucket. You can watch as the fine dirt and debris is trapped at the bottom instead of on your washing mitt or sponge. Features: Significantly reduces potential swirls and scratches Radial agitation grid removes dirt and debris from wash mitt or sponge