Zonzona. I bury about 10-12 inches. I bury meat carcasses a little deeper. You can also bury garbage on the garden side of plants growing, just far enough away from the growing roots, it will not harm your growing crops. Happy burying!
Yes, of course I meant food wastes, not pizza boxes, etc. My dog loves the feathered head, he eats it all, beak, eyes, brain--yuck! I was afraid to give my chickens the intestines, not sure its safe. I also bury chicken and turkey, bones and all. I had a little bichon frise a few years ago...
We bury the guts. Our dog eats the heads (all of it!), the liver, lungs, gizzard and heart. Buring stiff like dead animals and innards turns into wonderful compost--trust me on this, I am a WSU Master Gardener. I bury all my garbage too.