Patio Magic! 16491 Concentrate; 2.5L Kills Algae & Lichens on Patios & Driveways. This biodegradable cleaner is suitable to treat your patios, fencing, driveways and all round hard surfaces. Liquid Concentrate Mould, Algae and Moss Killer can be used on hard surfaces indoor and outdoor, and can be used as a pre-paint fungicidal wash.
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