The reason why I like this the best is because it's a cost effective option, plus it's not harmful to pet rats lungs, it's biodegradable and will turn to mulch or can be burned in a burn barrel or even scatter the used bedding and rat droplets on the ground or add to the soil in a garden as fertilizer.
Many other bedding choices have problems associated with them. Pine and cedar beddings are too strong of an odor for pet rats to breath day in and day out. It would be like us sitting in an office cubicle next to someone who wore a strong perfume all the time, or smelling paint fumes, after a while you'd start to gag at the smell and cough and need fresh air. That's what happens to ratties having to breath in pine and cedar smells. Aspen doesn't have much smell to it at all.
Corn cob beddings, when they get wet can turn moldy very quickly, a perfect breeding ground for bacteria. The cobs trap in the urine's moisture and maggots can even be found in it if not changed frequently.
Carefresh, the soft gray fluffy stuff has been known to harbor fur mites, a gift from them to your pets...how thoughtful of them to package these parasites directly from the factory...hmmmmm.
A thank you note to my customers: I'm not able to purchase my products at wholesale prices. I buy at retail just like you, therefore it may cost more to buy these from me than you could get somewhere else. I'm just offering these as a convenience to my customers. When products are purchased it helps to support my efforts of running a quality rattery and supplying quality pets. I greatly appreciate my customers support of my efforts, thank you so much!