A gutter filter or gutter-insert fits into an existing open gutter. Gutter filters come in different styles but most are made from a variety of plastic foam materials, or also, rounded bristles. However, each is designed to be inserted into the gutter trough and repel leaves and debris while permitting rainwater to pass through.
If you have a standard open gutter on your home, gutter filters can be a low cost gutter protection solution. However, they come in short 3 to 6 foot sections, and require frequent trips up and down ladders to install each gutter filter section.
Installation also requires a caulk gun and a pair of shears to cut the material to fit between gutter hangers. This creates gaps where debris can collect.
In addition, gutter filters don't eliminate gutter cleaning. The filters themselves become clogged with debris and have to be replaced or cleaned, or they themselves will cause the water damage you are trying to avoid.
LeafGuard doesn't require a gutter filter or bristles to collect debris, because its patented design sheds debris and allows the water to flow freely through your gutter system and away from your home.