Pests and vermin love rotting debris that often fills poorly maintained gutters. These areas provide a perfect breeding ground and access point for pests to get into your home. Rodents can use areas of your roof that have been damaged by poor gutter maintenance to access your roof. Once an infestation begins they can be hard to get rid of. Rodents can cause further damage to your property, along with health risks, and are potentially expensive to get rid of and repair the damage they cause.