Cleaning your gutters is one of the most important things you can do to maintain the beauty and value of your home. Clogged gutters can cause water to overflow and leak behind the gutter and find its way into your home causing serious structural damage. Overflowing water from clogged gutters can also cause damage to your foundation, decks, landscape and even cause potentially harmful mold growth in your home. When your gutters are clogged, water fills up and attracts pests like birds, rodents and mosquitoes. And if it freezes, the weight can pull the gutters off your house.