Originally Posted by hazelrunpack
Suet can go bad, Winston, but usually it needs to be above freezing... Is Hamilton warm? If you see mold growing on it, I'd pitch the suet and either start fresh or try again next winter.
Maybe it is the ingredients in the prepared suet cakes that allows them to get moldy Hazel, I have never seen mold on the fat balls I buy. I would think as long as the weather does not warm too quickly they should be ok, akin to being refrigerated.
I don't think I have ever seen a Warbler