The price of the bee was dropped to 16 gralats, so it really isn't as good anymore. Sadly bug's aren't around yet either. So if you are looking for extreme efficiency go with farming at an hour location, or somewhere private. Using bombs with the 2p mount is best, but not the only way. You can just swing and then pick them up, it really isn't all that much slower. If you're using pc you can starfe in a way that allows the gralats to fall right to you, pretty handy.

But looting is the best option in my opinion, since you can also get furniture and hats for doing it. But if you know you'll have the stamina for it, farming all the way.

And yeah, pyrat quest is the most efficient way to make money by a long shot.