Too much debris in your gutters can plug up the drainage and cause damage to your fascia, ice damming, and premature aging of your gutters and downspouts. Typically, gutters should be cleaned at least once a year in the fall, after the leaves have fallen from the trees. However, if you have a lot of trees or evergreen trees, you may need to have them cleaned more frequently. Horn Brothers offers a wide range of gutter guards that have proven effective, even in resisting pine needles.