Concord Grape Blueberry Maple Fishing Flavoring The Concord Grape Blueberry Maple Fishing Flavoring delivers a rich, powerful scent blend formulated for maximum potency on the water. This unique combination produces a bold, sweet aroma—making it one of the best-smelling Concord Grape Blueberry Maple flavorings you’ll ever use. Researched and field-tested by experienced anglers, Dead End Fishing flavoring has proven effective for targeting catfish and carp , while remaining versatile enough to attract a variety of other species. Designed to enhance bait performance and increase attraction, this flavoring helps turn interest into bites. Not for human consumption.