Steve, We've had the EZ2CY forward enclosure on our boat for 5.5 years and have only used their recommended products to clean them. Their website shows these: http://www.ez2cy.com/cleaner_description.html I was also told by my canvas guy that the spray cleaner is just re-packaged Armada 210 polish, and that's easy to find. My EZ2CY panels look great but the 40g Stratoglass are really getting hazy no matter what I do to them. Jim @Home