Or do as Mr A does on nightly basis, in the dark, and go slug hunting. You need a torch and a pair of sharp kitchen type scissors. You hunt the little bleeders down, chop them in half with your scissors and chuck them into the food digester bin where they decompose. After a couple of weeks, hey presto, no slugs. We have kept all our crops this year by using this slightly macabre method of control. As we garden organically, we don't like chemicals and we've tried every other method known to man, including beer traps, organic control substances, copper wire round pots, gritty mulches, orange peel, holly leaves, soot. The slug murdering method is by far the best, believe me!