Woodlice are very good for breaking things down as well as worms but Woodlice are very good they eat only dead rotten garden matter. Another idea is to get some Madagascar hissing roaches and feed them on all your vegetable/fruit scraps etc etc they eat everything, you get a nice layer of roach poop for compost, depending on how much you feed them and how many you have, you can get up to a liter of fresh compost out of them each week for your plants.
