I order from Chewy all the time.......
Do you have a feed store or Tractor Supply near by? The only grit I see on Chewy is a mixture of grit, oyster shell, and charcoal, or a pet bird 'grit' that is actually just oyster shell. Even many walmarts carry poultry grit, which is crushed granite. You want just grit, and price-wise it's generally very inexpensive and lasts quite a while. Poultry grit is larger than ornamental bird grit, and appropriately sized for chickens. Oyster shell is a whole different thing, and should be provided separately.
Do you have a feed store or Tractor Supply near by? The only grit I see on Chewy is a mixture of grit, oyster shell, and charcoal, or a pet bird 'grit' that is actually just oyster shell. Even many walmarts carry poultry grit, which is crushed granite. You want just grit, and price-wise it's generally very inexpensive and lasts quite a while. Poultry grit is larger than ornamental bird grit, and appropriately sized for chickens. Oyster shell is a whole different thing, and should be provided separately.