Porcupipe™ can also help to prevent entry of birds into the roof space and can also help to keep out twigs and seeds dropped by birds Porcupipe™ is a simple but extremely effective device designed to keep virtually any water/gutter system clear and free from all kinds of debris including moss and leaves The highly flexible top filaments of Porcupipe™ fit snugly under roofing, helping to anchor it securely in place whilst the side and base filaments fill the gutter space to keep debris out Fitting Porcupipe™ is simple and once in place should be practically maintenance free