I'm a composting novice so not sure if i'm doing it right. We inherited a compost bin with the house we bought 18 months ago, which was half full at the time. It's now full to the top with garden waste, veg peelings etc but it doesn't seem to be rotting down, or whatever the terminology is. Everything seems to stay as it was when it went in. It's now also crawling with woodlice. I did sprinkle some Compost Maker on top of every layer but it doesn't seem to do anything.
Help needed please!