I'd eat it. It will keep forever. Just heat it up if it crystallized. Dark is wonderful.
As for bees, it's poisonous. Between the excessive solids and the excessive iron and the excessive HMF it's not good for bees. USDA has done studies and considers it poisonous to bees.
In reality if it was fed in the spring, when cleansing flights aren't a problem, and watered down with some sugar water, you might get by with it, but why risk it?