No step on snek bro. Leave the snakes alone. I really doubt they're gonna chase you down and attack you. Keep your eyes open and if you see one, take a wide loop around it. Also the snake striking you is probably faster than you are with a knife. You're putting your body within 1' of a snake to kill it for no reason. That's not a bright idea. If you just wanna use the excuse to buy something, kabar kukuri would be about the only "knife" I'd try to kill a snake with. I'm really not a fan of getting that close to snakes on purpose though.