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POWERFUL OUTDOOR CLEANER – High-strength sodium hypochlorite based formula designed to clean heavily soiled outdoor hard surfaces quickly and effectively. REMOVES ALGAE, MOSS & BLACK SPOTS – Helps tackle organic staining, green growth, moss, algae and stubborn marks to restore a cleaner, brighter appearance. MULTI-SURFACE USE – Suitable for patios, block paving, concrete driveways, paths, decking, garden walls and other compatible outdoor hard surfaces. FAST ACTING FORMULA – Apply to the affected surface, allow approximately 5–15 minutes working time, then scrub if required and rinse thoroughly with clean water. 5 LITRE PROFESSIONAL QUALITY – Large 5L container suitable for domestic and professional outdoor cleaning applications. Can be used undiluted for heavy soiling or diluted up to 1:4 with water depending on the job.