Well said liquid orange, but Bigbulls is no joker, if he said they work it's worth a shot. But it is true if you use what you have always used and killed why fix it. I made that mistake for years tring to find a new head that would fit me, I eventually can back to muzzy. For 20 bucks I'll probably buy them and try them on the first doe that comes by and then judge them from there.