The answer to 'difference between gutter guards' is that gutter guards come in a variety of types, each with its own features, benefits, and use cases. The main types of gutter guards include mesh screens, foam filters, brush guards, and reverse curve guards. Each type has its own advantages and disadvantages in terms of debris prevention, water flow, maintenance, and cost.
Mesh screens are effective at keeping out large debris like leaves and twigs, but can clog over time. Foam filters are inexpensive and easy to install, but may not handle heavy debris as well. Brush guards allow water to flow through while trapping larger debris, but require more maintenance. Reverse curve guards direct water into the gutter while deflecting debris, but are typically more expensive to install.