Right- but you don't want them filling up on zeolite instead of feed. For the 1st week or two, just use paper towels, until they know what is and isn't food. I used to use zeolite in the coop with the bedding. Even with granules it was so dusty that I'd end up cleaning their nostrils with a qtip,and I'd be sneezing. I switched over to hemp bedding and don't need to add anything to dry droppings. But for now, papertowel is best. I use puppy pads in the brooder, too.Setting aside the question of whether or not zeolite is sufficient as grit: These baby guineas are only eating commercial feed - game bird starter - so won't need any insoluble grit until they're old enough to range.