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Moss & Algae
Moss grows on porous surfaces such as concrete, brick, wood and tile in areas of low temperature and high moisture levels. Algae lives in wet areas. It has no roots or leaves. It is particularly dangerous on hard surfaces as it is slippery
Mineral & Water Spot Deposits
Calcium, rust, lime and other mineral deposits generally accumulate on wet surfaces such as sinks, basins, toilets and glass shower screens. They can also build up in drinking vessels and cooking equipment.