I kind of have to disagree with pithing as a good method for euthanizing a defective BP at home because after being in a physiology class where we had use this technique to cull specimens, it largely seemed ineffective because the vast majority of my peers were either unable to do it, or worse, did it incorrectly and ended up putting the frogs through so much more pain than was unnecessary. Like, I hope this doesn't seem out of line because I'm sure that there are other people who have actually had to put down BPs in this manner and have much more experience with breed snakes than I but after participating in that class, I have to assert that most people do not have the finesse or gut to properly pith a living animal. Not to say, freezing isn't a delightful manner in which to die either but there's much less room for mistake there and it doesn't require as active a role as pithing. I may be wrong but I think the dry ice and cooler method in DIY forum would probably much more effective and arguably more humane to cull a BP.