Authors:

No matter how many times Percy killed them and watched them crumble to powder, they just kept re-forming like large evil dust bunnies.

Rick Riordan (2011). “The Son of Neptune (Heroes of Olympus Book 2)”, p.10, Penguin UK
No matter how many times Percy killed them and watched them crumble to powder, they just kept re-forming like large evil dust bunnies.