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Title: Don't Waste Your Money!
Review: I used both the OxiOut Algae & Mold Remover and the Oxi-Shield Barrier on my flagstone patio, which stays partially shaded. As a result of the shade, the new patio stones had turned green with algae. I found these products in my local Ace Turner Hardware and hoped that they would do the trick.The OxiOut cleaner worked great, especially when used with a pressure washer. But, I can't say the same for step 2 of the system, the OxiShield Algea & Mold Barrier. We even applied two coats and the algae quickly returned, just as bad as ever. I emailed them for an explanation but to date, I haven't received a response. Don't waste your money.
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