Algae often develops on patios, appearing as a green, slippery layer on surfaces like paving slabs and concrete, especially in damp and shaded areas. While it is generally harmless, it can make patios look unkempt. To combat this issue, paving specialists from the Reclaimed Brick Company suggest a natural cleaning solution made from citrus peels steeped in white vinegar for a week. This method not only helps remove algae but also leaves a pleasant scent due to the natural citrus oils. To use the solution, first sweep the patio to eliminate debris, then pre-wet the area with warm water to ensure even application. After applying the diluted citrus vinegar, allow it to sit for five to ten minutes before rinsing off with clean water. Regular cleaning is essential to prevent algae and moss buildup, which can create slippery conditions and reduce the lifespan of the paving.