Compost Tumbler- Grubs!!

So I have been feeding my compost tumbler and it seems to be doing pretty well. Things are turning brown and the volume has decreased and it doesn't smell too bad.  My only concern is that I have grub/maggot things in there.  They seem to be going to town on my corn cobs and my general feel from my internet searching is that they are good for the compost bin.  My only concern is putting them in the garden. Will they eat my plants/roots?  I am hoping them will die/go away before the compost is ready but if they don't is it OK to put maggot-y compost in the garden?

New Toy

I finally broke down and got a compost tumbler.  The worms were too hard, they always smelled and had mites.  So anyway, here it is!

Its a ComposTumbler.  So far so good.  I put a bunch of shredded paper in there last weekend and have been gradually adding food and garden scraps as I get them.  I also dumped the remains of the worm bin in there.   I don't think theres enough green stuff in there yet to do anything spectacular.  I will keep you posted on how things go.