Coir is generally made to withstand the elements (weather, wear and tear), but is very difficult to clean and usually leaves a water mark.
To spot treat matting, wet the Wash & Stain Bar and gently work into the stained area(s).
Remove soap and dirt with a wet Lint-Free Cleaning Cloth—be sure to remove all soap.
Dampen the cloth as needed, and repeat the process until satisfied.
Always store separate from other items.