Anything that makes them fly up in the air. Which two weeks ago was a mix of American Eagle and Winchester I've had laying around for years.
FWIW, a 12ga will make a 30ft plume of water and rain down frog parts 50 yards away 5 seconds after the shot. Cousin did that, and I was watching from up on the deck. Nearly pissed myself laughing. How that little pond supports so many thousands of frogs is beyond me. They're REALLY loud, but there's no bugs. So loud if you're more than 10 feet away from each other you have to yell.
