Surround Crop Protectant

[Tomatovator]

Has anyone tried using Surround all season long instead of insecticides and fungicides? How effective was it? I bought some of it last season. I had removed a lot of leaves that were sick looking and as a result was getting sun scald on the exposed tomatoes. It seemed to work pretty good protecting the tomatoes from sun scald but now I have almost a full bag left. I probably have enough left to last 2 or 3 seasons as I only put in a dozen or so plants.