mogga wrote:
How can you drown a creature? A quick death is better, well I think so.
It is but if pounding them to a pulp isn't an option ... what else is
there? Release them into the wild miles away from your cabbages.

I drop them in the chicken run. If they're quick, they have a chance
to escape! Plus it's vaguely entertaining to watch the chickens play
caterpillar-tag.