How Does GutterFilter® Work? 
GutterFilter® completely fills and seals the top of your gutter system, leaving no room for leaves, seedpods or maple tree “helicopters”. Birds and wasps can’t nest and mosquitoes can’t breed. We love Mother Nature, just not in your gutters!
While other protection systems suffer the effects of aging, GutterFilter® with Crystal-Flex Foam™ actually improves with age. Sunlight activates the top surface of Crystal-Flex Foam™ into a clear, flexible crystalline coat, forming a protective “shell”. While porosity is unaffected, the ability of debris to slide off to the ground, even in a light breeze, keeps improving.
No more clogged, overflowing gutters! While water pours through in torrents, debris is either pushed off, or eventually dries up and blows away - it’s just that simple.