I got 2 chests full of drones. Are they useful in any way - considering they are what's left from n-th princess+drone breeding processes.
I don't know if you still can in current versions, but I used to throw mine into a recycler.
For some reason that strikes me as more evil than pumping them into a void pipe. I have no idea why.
Not quite true. SirSengir has just updated Forestry and now drones stack, they must have the exact same genome though. Princesses\Queens still do not stack however. So once FTB is able to update you can stack drones.Bees never stack no matter what and the apiarist's chest is mostly useless other then the info on the side that tells you what bees you have. The only use for the extra drones you get is to allow you to cross breed bees between hives as well as sometimes having different traits on them. Which is really only useful when breeding bees and if you are using a automatic system then the best thing to do is void/dump them in lava.