Buying ANY GRIT is a waste of money. It has never been needed. In days of old, chickens free ranged and got kitchen scraps and left over feed from other farm animals. They ate dirt, rocks or what ever they could find to grind it up in their gizzard.
Nowadays, commercial chicken feed (whether pellet,crumbles or mash) is all pulverized into dust, then extruded into pellets, broken pellets are sold as crumbles and all the dust and scraps are sold as mash. But no grit is needed because it's all water soluble dust just in different forms.
You love your chickens and want the best for them, but chickens know their body better than you do. If they start to get clogged up from eating whole corn, big weeds, or what ever they come across, they will seek dirt,sand, or rocks to help their gizzard getting that stuff up. (Occasionally,they'll eay really long weeds that cause impacted crop)
Bottom line: never waste your money on grit. Is a Big Biz Scsm for idiots to waste money on.
If they are free ranging, and can find food on their own, they can find more than enough grit.
If they are penned and you have to feed them, no grit is needed because you are feeding them grain dust in a water soluble pellet form.
Even if you feed them old dry cracked corn (or worse, whole corn)as long as they are on dirt and not concrete or caged off the ground, they will eat enough dirt to act as a grit.
Only time you ever need to worry about grit is of you feed them whole solid grain and you see lots of solid grain in their poo. I fed mine old rock hard whole corn and never see any whole corn on their poo. The dirt they eat grinds it up.
But do what you want, waste your money and worry till your teeth fall out. Then you'll have to buy grit, for yourself to eat.
