Slug flavours

I'm unsure which slugs are bad, which are quite bad, and which are fine. (or even desirable).  We have ALL sorts and I find myself stamping indescriminantly. Big black, big brown, medium brown, small brown, very small pale.

In the words of a wheelie bin in science fiction.................

Exterminate, exterminate, exterminate.  

  How dreadfully cruel!

Slugs:

Black-clad burglar
glistens in mischief, moonlit
with vertical intent.

Eye-stalking tender leaves
he scales the cold-frame;
orange frills quiver.

Carnage ensues.

By morning
Slime-sucked glass and
silver trails, the
gardener’s only clue, and

the villain
grins a leaf-stuffed grin,
almost as fat
as his belly.

A link to where the poem came from

Personally I find a sharp dutch hoe works wonders on the fatter orange ones! 

My beer traps do not discriminate, they just invite the slugs in, they get lashed and drown happy.
The trap that gets the best results is the 12 inch gap between the fence and greenhouse.

 I'm thinking of planting some sacrificial lettuce there and putting a sprinkle of Slug pellets down to turn the area into some sort of death zone. If the pellets don't get them the beer traps will.

Bring on the slimey contestants