I think worms may just live for mold..:)..and worms can only feed on apples when they get mushy. I would use the sour cream, but only in my outdoor bins where I do not have to think about the smell.

As an addition to Susan's excellent comments, if yours is a mature bin then burying stinky feedstocks should be sufficient to stop odors from being a nuisance. If yours is a fairly new bin consider waiting a bit before adding smelly materials if the possibility of unpleasant odors would be a problem. Regardless, smelly feedstocks in any active worm bin are typically only smelly for a day or so.

Micky, if the apples are mushy and wet mix them with a bit of dry bulky material, but by all means use them! You'll likely find they disappear very quickly. Several years ago we did some trials with apples to determine if there was a significant advantage to slurrying or significantly chopping feedstock items. We compared the worm populations, system manageability and time to feedstock destruction in bins fed slurrried apples; apples chopped into chunks (using a shovel and a five gallon bucket); whole apples that had been frozen; whole apples the peels of which had been slightly torn or sliced; and whole, undamaged apples. We found that chunked apples and those with the peels sliced supported excellent worm population while creating little if any system challenges, and, surprisingly, were processed at a comperable rate. Frozen and slurried apples caused problems with excess moisture, and the slurried apple mixture generated significant heat, causing the worms to collect around the edges for several days as opposed to processing the feedstock efficiently; whole, undamaged apples remained longest in the system before being processed.

Our conclusion was that simply chunking the apples, or slicing through their protective skin was the most efficient method for managing them in a worm bin.

Now, in your circumstance, Mickey, where you have apples that have been frozen that you specifically want to process in your bin, simply mixing them with dry bulky material should prevent any of the potential challenges we found in our trials.

KellyS