Good one.

I'm not as worried about the vegan zombies as the omnivorous ones.

Would 50,000 volts do it? I remember an old Nightstalker episode, in which the zombie was killed by filling is mouth with salt, sewing it shut, then he was hung in the middle of a circle of white candles. I've always made sure to have a sewing kit, salt and candles in my kits for this very reason.