Some of our customers clean our filter sock with a pressure washer. For our aquarium service company and personal use, we collect a group of dirty socks and clean them in a washing machine with a little bleach. You will find our exact steps on our Aquatic Experts website https://www.aquaticexperts.com/blogs/faq-resources/64782659-how-to-clean-filter-socks-and-filter-bags-faq This cleaning methods saves time and ensures the organics are removed