Moss can create a charming look in gardens, but it poses significant safety risks by making patios slippery and increasing the likelihood of falls. Landscape designer Mary Stone emphasizes the ineffectiveness of pressure washers for moss removal, as they often leave spores behind, leading to quick regrowth. Instead, she recommends a simple solution: a mixture of three tablespoons of biodegradable dish soap mixed with one gallon of warm water. This method effectively breaks down the protective coating of moss, dehydrating and killing the spores. After applying the solution, it should be left to sit for several hours before using a stiff brush to sweep away the dead moss. Rinsing the area with clean water afterward ensures no harm comes to surrounding plants. This approach is not only effective but also safe for the environment and easy on the wallet.