Posted: 16/12/2011 at 11:42
I would avoid using a flame gun as it would kill off lots of beneficial insects - including worms - as well as bacteria in the soil. Chemical pesticides would do the same and would probably be absorbed into the crops you're growing, which you would presumably eat.
Spotted Snake millipedes tend to only attack crops in drought, so next year, make sure plants are well watered. Also encourage more birds, frogs and toads into your garden, which prey on millipedes. pansy2's idea of keeping chickens for a couple of years is a great idea, and before planting you could dig the area thoroughly and rermove any you find.