20 Gutter Cups Gutter Guards - 30 Feet Long - Best Gutter Cover Protection - DIY Gutter Guard Gutter Cups stop leaves, pine needles, and other debris from clogging gutters. Say Goodbye to Clogged Gutters, and Frequent Gutter Cleaning. Gutter Cups allow free flow of rain water even when completely covered by debris. Gutter Cups fit all standard residential gutters. They provide effective low cost gutter protection. Clogged gutters damage house foundation and promote mold.