This is my newest weapon against killer slugs: A small pie tin with a slight modification:

Cut an entrance hole for the slugs:

Fold the top of the entrance hole a bit to avoid sharp edges:

Turn the tin upside down, put some slug “poison” under it, and secure it by leaving some weight on top. It will keep the rain from reaching the pellets, so they’ll stay dry:

I’ve set up one trap at both ends of each bed that I have.

And as usual the cat just wanted to point out that I shouldn’t be exercising too much control over nature, so it flipped one of the traps open during the night and played with the pellets. It must be really boring around here during the nighttime