Bedding

[NatJ]

But like someone else said. If you give them the grit for the crop it should help break stuff down.

Grit works in the gizzard, not the crop.

The food has to go through the crop before it can reach the gizzard further on, and get ground up there. So it is possible to have a crop impaction that is bad enough nothing reaches the gizzard to get ground up by the grit-- not very common, but definitely still possible.