Hi, I’ve searched Petco’s site for the Coconut Coir you mentioned and can’t seem to find it. But I’d say, check the information on both of the products and compare them. This product says that it is nutritionally suitable for live plants, it also increases humidity in the terrarium and encourages burrowing and digging in animals. Does the product you’re referring to have these same pluses? Is it cheaper? Does it have a similar look to it? I’d just go by that and decide which one is better for you. But honestly, they’re probably both the same quality just different brands. Hope this helps!