Using a pressure washer on an inflatable kayak is not recommended. While inflatable kayaks are designed to be durable and withstand the forces of moving water, the concentrated jet from a pressure washer can be too forceful.  This can lead to unnecessary wear, or worse, create small punctures or weaken the seams. If your inflatable kayak has substantial dirt or grime, it’s best to use a low power water source like a garden hose along with with a soft brush or sponge. For stubborn spots, a mild, non-abrasive cleaner can be used.