MicroGuard's micro-perforation gutter guard system will keep the bottom of your gutters clear of debris, allowing water to flow freely through the gutter trough and downspout and safely away from your home. No more cleaning leaves, twigs, acorns, pine needles or other debris from your gutters - with over 48 micro-perforations per square inch, this gutter guard screen will keep even the smallest debris out. Best of all, it will not affect the look of your roofline, it's virtually invisible from the curb.