You may protect your rope products by spraying it with a water proofing product like Scotchgard.
If you decide not to and your items dirty, there’s no need to worry. It’s cotton!! Spot treat or clean heavy stains by hand with a mild detergent and cold water. You can also machine wash your items on a cold gentle cycle with a mild detergent inside a mesh bag or pillow case. Once the wash cycle is complete, reshape your item as necessary, and lie flat to dry (this may take 1 to 2 days because of the thickness of the rope).
No matter how dirty it may get, do not bleach it! It will break down the stitching and eat away at the cotton rope. We want you to have your product for a long time. So treat each piece gently!