There are lots of comments in threads on the Forum about care and cleaning of your FJ shoes. I treat my MProjects just like any other leather shoe in my collection. If you have the mesh type, I, personally, have no idea what the proper cleaning method is but I recall seeing some comments on that, as well. Search on "shoe care".
From our shoe team, "We recommended removing the Fitbed and place in washing machine with mild soap. Dry cool air, and when almost dry insert shoe tree to help keep it's shape."
FOR MESH MODELS ONLY
Clean the leather versions are you would clean any of our shoes.