As seen on television: Dirty Jobs with Mike Rowe, Univision, the BBC, and many other news segments. Great for use when releasing that fish with a $3000 satellite tag, or when tournament fishing! This is one (1) can, totalling 5.2 fl. oz. in a manually-activated repellent canister. Specially-weighted can will initially sink and then rise to the surface as repellent is released, creating a total 150mL surface cloud of semiochemical repellent (affects shark's sense of smell (olfaction)). During testing, bait was protected for 15 minutes after repellent was released. We based this repellent technology on the work that SharkDefense did with rotten shark carcass extracts.