I’ve developed a bit of a slug problem in my worm farm. Everytime I open the lid there are a couple stuck on the walls around the top. I’ve been picking them off (with a trowel – they’re gross) and then squooshing them on the pavement, but I’m getting tired of it. I saw “Slug and Snail Repellant” in the gardening section at Kmart but I’m worried it might hurt the worms. Does anybody have any suggestions beyond the old standby of drowning them in beer?