Micromesh and perforated metal gutter guards are effective at blocking pine needles, which are thin and can easily clog gutters. These guards have fine openings that allow water to flow while preventing even small debris like pine needles from entering the gutters.

Pine needles can be difficult to block, but micromesh and perforated metal guards do an excellent job of keeping them out of gutters. These guards also help prevent other fine debris like roof grit from accumulating inside the gutters.