Donna in Idaho wrote:

Thanks for all the replies. The trough is on my patio, so even though
we drilled holes in the bottom, the worms would not have access to the
ground. Guess I'll forget that idea!

I'd not have destroyed a new perfectly sound watering trough with
holes, I'd have used it to hold plants in large clay pots. And forget
all about worms, no one adds live worms to potted plants, there's no
point, and they'd die within hours.