The answer to 'difference between gutter guards' is that gutter guards are protective covers that fit over your gutters to keep debris like leaves, twigs, and pine needles from clogging them. The main differences between the various types of gutter guards are the materials they are made from, their installation method, and their overall effectiveness at preventing clogs.
Some gutter guards are made from metal mesh or screens, while others use foam, brush, or surface tension to keep debris out. Snap-in and screw-in guards are installed directly onto the gutter, while others may require more extensive installation. The most effective guards use a combination of materials and installation methods to provide the best long-term protection for your gutters.