Just a quick update... And it's good news! There have been no more fruit flies out of the worm bin. So perhaps it would be safe to stick with freezing the scraps before adding them to the bin. I still haven't decided what to do about adding leaves to the bin. To bake or not to bake? What if I put them in after taking something else out, to use the residual heat? I am pretty sure nuking the leaves would be a bad idea. I am probably putting far too much thought into this question. But, you know, the idea of a winter sharing the house with bugs is just sooo unpleasant.