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A lot of times moisture is subsurface and cannot be eliminated with a simple catch basin drainage system. If water is standing over a large area and you have mossy mildew as a result, the answer is a French drain system. A French drain will continue to pull water from an area long after a storm, even and especially underground. The idea of a French drain is to provide moisture a place to go, which will aid in draining a problem spot and help to keep it dry.

If you have mold or mildew in your lawn, consider installing a French drain. Enjoy!