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Thats what the equine fresh site says for local stores, also if you have a tractor supply store close they carry it.
You can also look for Woody Pet, its the same stuff.
They have a dealer list here: http://www.woodypet.com/dealer.html
for online and off.
As far as using it with the babies, the only thing I stopped doing is using it in with mamas getting ready to drop. The fine shavings it creates seem to cling to wet babies a bit much to suit me. Currently though for cost efficiency and odor control (over 100 rats in my living room thing) we mix it with pine shavings.