GRANT’S™ Auto Detailing Dirt Guard Bucket Insert has a specialized honeycomb structure to filter dirt, grit, and grime from your wash mitt and trap it at the bottom of the wash bucket. When combined with the two-bucket method used by many professionals (one bucket of water to clean the mitt, one bucket with soapy water to load the mitt with suds), the bucket insert significantly reduces the chance of swirls, scratches, or marring from the wash process. The bucket insert also works great with a single bucket for quick wash-ups.