Mirelurk Queens can turn raiders into goop.

I was running around the commonwealth when I came across a lake-facing boardwalk filled with raiders. I was about to kill them when I spotted a mirelurk queen nearby. With a little smart positioning and a silenced weapon, I lured the mirelurk queen to the raiders, and she killed them all, just as planned.
While I was looting the mayhem after all was done, I noticed that several raiders had turned into puddles of goop. Slimey, translucent goop. Not ash, like energy weapons often do.

I never noticed that before. It must be because the queens usually only kill me.