I just got my first VFT a few days ago, so I apologize if this is a silly question. I placed a fly in a trap, but it didn't quite get to the bottom. The top didn't really close on the fly. The trap has now turned black just where the fly is. Other traps on my plant that have died seem to have just turned black all around. Is it bad if a bug is not positioned right in the trap? Will a trap die while eating?