Gutters are a necessary component of every home as they divert water and debris away from the foundation. Just as important as a gutter system, are covers for your gutters. A great gutter cover will keep rodent or bird nests and other debris from piling up inside your gutter. This collection of blockage can cause adverse affects, such as, forming trenches around the foundation, seepage into basements or lower levels and water damage to the siding.