Board Thread:Game Help/@comment-26038919-20150126012224

So since I heard the meteor head farm doesn't work for key molds anymore, I was wondering if when trap kill regular crimson mobs, will they die? Cuz I was thinking I could go afk next to a bunch of traps n such while crimson mobs charge me and get killed by flame traps, spiky ball traps, pets, falling stars ect. So do I have to kill the mob in order for it to drop it or can traps kill the mobs and the key mold can still drop? 