My dwarves are starting a war with other inhabitants of Fairy. They have gone to Earth to seek a weapon. They can't import any weapon with iron/ steel. They find toy water pistols and wish to load them up with poisoned water of some sort. I am thinking not to kill but to render inactive. Spray a mist that causes sleep?
My question is what poison would you suggest? And what else could it do? Or can you think of another no-iron weapon that dwarves could use to send fairies to sleep?