It's a mere waste of time.

The young rascals are dead.

Drowned or blown up, what matters it?
They will never trouble you again." "You don't know the villains as well as I do.

They have as many lives as cats.

I could have sworn that they were burned at that mill, for I watched till it fell, and not a soul came out; and to this moment I don't know how they escaped, unless they flew away in the smoke.