Our gutter products are backed by a 100% "NO CLOG" guarantee. Leaf Solution is easily installed on existing gutter systems, both old and new, or it can be the perfect complement to new construction. Anyone that says Leaf Solution is not the best gutter protection system on the market must be a competitor! No holes, slits, louvers, or other openings that can allow debris to enter and collect in the gutters ... (not even a grain of sand!) A simple yet elegant low profile design – virtually unseen from the ground – unlike other bulky systems.