Mike Rowe says: The repellent works and the sharks scatters in every direction. Unbelievable, I don’t see a shark anywhere. 15 seconds ago there were about three dozen sharks.

Kyle says: With 3 relentless sharks circling around the coral head my black grouper was rocked up in I got a chance to put the Sharktec shark deterrent to the test. Almost immediately they were all gone giving us the time to work the grouper out without having to watch our backs.

Dr. Patrick Rice says: We’ll chum the sharks up, they’ll go into a feeding frenzy, we’ll deploy our chemical and almost immediately, they will stop eating, even though small chunks of fish are in the water. It’s like they were punched in the nose.