I have been using a compost bin for 15 months and have added a good balance of 'greens' and 'browns'. After checking, everything looked in its original state. Why is this and what can I do?
It may be worth exploring the contents of the bin a little further. As the composting action tends to occur in the middle of the bin, you may find that you have some compost hiding away already.
However if the contents of the whole bin are largely unchanged, the best course of action would be to give it a good stir. By doing this you will incorporate more air into the mix and it will also help you to correct any imbalance by adding more materials.
If the contents are very dry then add more 'greens' and add some water. If the contents look wet and there is a lot of compacted 'green' material then simply add some more 'browns'. This should help get the process back on track.