How To Discourage Snails From Hanging Out In One's Kitchen:
Turn the music up loud and play rock- they don't much like rock, too difficult to climb.
Tell them they are not welcome.
Ask them to leave- doesn't generally work, unless your Snailese is better than mine, in which case could you give me a few useful phrases? (Coming soon 'The Berlitz Guide to Snailese'.)
Play Café music, they don't like that either as the coffee grounds scramble their slime paths.
Bring in a rabbit from the field and ask them to race the snails...actually that didn't work so well with the hare and the tortoise, did it?
Tell them to hurry up and get on with whatever they're doing and hope you annoy 'em enough to make 'em leave.
Kidnap them and sell them into slavery to the French Restaurant...guess who's been listening to Joseph and the Technicolour Dreamcoat?
Invite some ducks to tea.
And if all the above fail, evict 'em by throwing them over the wall into the orchard- it discombobulates them, you know?
They even ate the cover of a good novel.
Any better ideas?