I've got a neglected 'dalek' compost bin, full, very dry, with a colony of red ants. Clearly I need to start again, and be more diligent, but what do I do with the current contents? Apart from the red ants, it's mostly spent compost. Can I spread it as a mulch - will I be over-run with red ants, and if so, how do I get rid of them first???