Hey Gregavi, basically what i do is cut off a small piece of any type of frozen fish filet, place it in a small ziplock bag, let it thaw and once it has thawed completely I just squeeze the fish filet while still in the ziplock bag until it becomes mushy and then I take a thawed pinky and rub its head on the mushy fish filet. Hope this post helped, if you have anymore questions feel free to ask.

Check out the sites caresheet for which fishes are safe to feed garter snakes and I know what you mean by wanting to feed your snakes live food and watching them hunt, I like that too so a few times a month I feed my garters guppies in a water bowl.