I have started what I call "hole composting"...we currently have 6 worm bins and find we still have leftover kitchen and yard refuse as well as junk mail and such to figure out a way to get back in the soil. I dig a 2 to 3 ft hole in our raised veggie beds and we fill it up and backfill it with some of the garden soil...I have been doing this systematicaly through out our beds. My thought that bringing up the soil down deep and mixing it up with the topsoil can only be good. I toss all waste into the holes...bones, fat, cardboard etc. I figure it is deep enough that it can all only be a boon to the soil. I am looking for feedback on this. Any thoughts or experiences appreciated.