Grit Guard –
The Grit Guard Insert is a raised radial surface that fits into the bottom of any 3 to 5 gallon bucket. The Grit Guard Insert extracts grit and dirt from your wash mitt, sponge, towel and any other washing utensil when you drag it across the Grit Guard. The dirt settles at the bottom of the bucket so your wash water stays clean. Four quadrants at the base of the Grit Guard calm the wash water and hold the grid above the bottom of the bucket. Dirt and grit fall to the bottom and stay there.
Chemical Guys Grit Guard Universal Pad Car Washer with Pad & Wool Cleaner Kit
Grit Guard Insert –
Grit Guard Bucket Insert – Leno's Garage
Chemical Guys IAI503 Grit Guard Insert, Black, 10.5 : Industrial & Scientific
Shop Supplies Wisconsin Chemical
Grit Guard –
General Accessories, Car Care, Cleaning & Detailing
Chemical Guys DIRTTRAP03 Cyclone Dirt Trap Car Wash