No, we generally do not recommend additional cleaning before packing the tube. Simply follow the deployment and barrier emptying instructions, and you’ll be prepared for the next event. It’s important to focus on water filling, where strainers/filters on the water pump will ensure you fill the barrier with clean water, whether it’s fresh or saltwater.
However, if you still wish to clean it, you can inject a small amount of water at one end. As you lift the empty flood barrier with the winch for folding and storage, this water will wash the remaining part and eventually exit from the other end.”