The bedding pellets are large enough to house chicks for over a month before they could eat one that would be big enough to harm them.
By that time they already know that the bedding is not food.
I shop at the Monroe Farm Supply and they carry over fifty different kinds of chicks and ducklings, turkeys and with all those tubs..........
you guessed it they are all filled with horse bedding.
So just because one person thinks one way and doesn't use them doesn't necessarily mean that it is lethal.
I will try to post a few pix when I get back from there today.
I have to make another run and will get some pix.
Mike.