Since a few weeks, I got a small slug infestation. Since I have a large, glass sliding door at the back of my house which the snails seem to like, it gets covered in slugtrails and slugexcriments. Needless to say, I'd like to prevent this. During the night, about 20 different slugs traverse on my glass doors and are all gone when morning comes.
Question is how I can prevent these buggers to slime on the glass doors in the first place?
I have tried to "humanely" kill them off with saucers of beer... But it seems they are just partying the night away, because none are left dead in the morning. I know about the salt thing, but since there are so many, I don't think killing a few off every evening is going to do the trick.