Why not just shoot them? I can't imagine the croc being very happy about being dizzy all the time. More over how does this stop them from wondering in to town?
I don't see the need to mod this -1. I'm from Florida, and "Why not just shoot them?" was the first thing that popped into my head too until I realized that they were really talking about crocs and not alligators - which unfortunately most people don't realize are very different. There alligator population in Florida is in the millions, but there are only a few thousand crocs. Anyway, I thought it was a valid question that deserved a proper answer, not a "fuck you".