last year we used slug pellets (no-name sluggo i guess...) and we put them down one day and the next day i had to go collecting the mass exodus of snails across the lawn so they don't just go munching on other stuff. plus i had to clean up the nasty dead ones from the garden cuz if you don't not only does it go *crunch* with every step in the garden but the birds and flies have a field day. worked tho.