Berkley Gulp! Chum is made from natural ingredients that releases 400 times more scent than plastic baits. Formulated especially for ocean gamefish, Berkley Gulp! Saltwater is so potent it can actually OUTFISH live bait. Plus it's 100 percent biodegradable for a cleaner environment. Stock up on a full selection of Gulp! Saltwater baits and you?ll experience more action than ever! They all look, smell, and move just like the real thing. No refrigeration needed Made for fishing shallow water structure.