>Couldn't you just eat them or something? Eating them isn't nearly so satisfying as crushing the life slowly out of them. Or going to work with scissors.
>The children are being good... One of the children is actively destroying a book in the first panel, and doing so with the mother's permission. They're both guilty.
>also, they still ruin the books by crushing the yukkuri in the pages. The books have already been ruined, so it doesn't matter if you use them to crush the yukkuris.
Besides, they wouldn't be killed with the books if they hadn't gotten their disgusting slobber on them to begin with, so it's fitting to kill them that way.
I wonder if anyone ever made a game of them where you could herd, trap and exterimate them using a bunch of Rube Goldberg like setups to move them along a room. It would be an instant hit.