I do the salt thing but I hate pouring it on their heads so I do a shield of salt(like a ref with his shavin spray) just ahead hoping they have a sniff and fuckoff. Went out in the back one night for a toot and stood on one in me socks. Ran in,grabbed me torch and went full kung fu on the lot stoned out of my head. It was summer so the slugs were out. Just a shame I left the washing out. The ironic thing is, there was one still hanging off one of my socks on the washing line :D