Will any debris enter the gutter after LeavesOut is installed?

Larger debris, such as twigs and leaves, cannot enter through the gap between gutter and cover. An important part of the LeavesOut installation procedure is a thorough gutter cleaning; subsequently dirt, roofing granules, and other small debris may be carried into the gutter without causing a problem. The flow of rainwater flushes this small debris through the always-clean gutters, and the downspouts do not get plugged.