I just got a new bedding for my guinea pigs. Its called So Phresh and it says it had baking soda in it. It says it is for small animals but i just want to make sure its safe. Has anybody ever used this bedding? Ive heard baking soda is bad to put in their cage so im not sure why this bedding is even in stores. I didnt see the baking soda thing before i bought it unfortunately. Its paper bedding.