There's more than one way to do it? Neeeeeaat! Not my expertise, but still pretty creepy and cool all the same, teehee!

Sorta. It takes a ton of energy to power the machine that makes them, but we do now and then when the time calls for it. They die waaaaay too fast, though. They'll probably last as long as one battle then disintegrate into a puddle of icky stuff!