Thanks for the responses and input guys I think my next step is trying to get rid of these things. Where the hell is my GBH when I need him?

CJB do you know if Horned Owls and Red-Tail Hawks eat these things as well? The back of the property is wetlands and littered with both of them as well as GBH, I imagine at some point they'll get wise to the snakes while they're catching some rays by the pond.

Ric are you actually going Crocodile Hunter style and trapping these guys by hand?