Ants prefer much drier conditions than worms, so keeping your worm bed nice and moist (assuming good drainage) is a good start.
Perhaps putting the wormery up on a table and smearing something sticky or slippery around the legs might work? Try setting up a perimeter of diatomaceous earth on the ground around your bin – this should greatly harm any ants that try to cross it, since it is essentially like a field of broken glass for bugs (ouch!).
Ants prefer much drier conditions than worms, so keeping your worm bed nice and moist (assuming good drainage) is a good start.
Perhaps putting the wormery up on a table and smearing something sticky or slippery around the legs might work? Try setting up a perimeter of diatomaceous earth on the ground around your bin – this should greatly harm any ants that try to cross it, since it is essentially like a field of broken glass for bugs (ouch!).