Hi all, i was once told years ago by a guy who used to give his horses egg shells (crushed) that it used to get rid of things in the lineing of the horses stomach like dirt and bot fly eggs, i used to think, would that work with dogs,? I never knew cause i never brought it up untill i seen KitKat's remark on egg shells, i know i used to grind it up for my chooks as a source of calcium.