it's been my experience that the only way to control slugs & snails is to actively hunt them. poison trails or beer traps only work in confined quarters. to really decimate the population requires active participation. here's what i do: 1) hunt a. seek & destroy during and after rain storms b. get ducks c. hold dances/parties outside during the evening & stomp 2) trap & extract a. set out wide boards elavated on low rocks b. set out sheets of cardboard c. set out tarps of dark plastic sheeting repeat as neccessary:)