I haven't been able to search out an answer to this, and ask The Collective for kind input: I know enough not to use ammonia based lens cleaning solutions on Plutonite, but I don't have easy access to Oakley proprietary solution. Is there anything else available until I can acquire Oakley's own? Secondly, is the expense of Oakley's Hydrophobic solution worthwhile as a protectant? Are there any "homemade" recipes worthy, for either cleaning or protection? Thanks for your expertise!