A roof gutter for the purpose of keeping small debris out of the gutter and allowing rainwater to pass into the gutter. The covering is comprised of a water permeable, weather resistant mesh having apertures of a pre-determined size for passing water, the mesh sized to substantially cover a rain gutter; corrugations formed in the mesh; a debris collection first trough disposed along a longitudinal axis of the mesh, formed by making at least two bends in the mesh, the first trough located between a longitudinal midline of the mesh and a front gutter end of the mesh.