New to Western Toads. Please Help!

[daybr4ke]

You can probably keep using the dirt. There are a number of reasons to use coco fiber, but one main one is that you don't want to expose a non-local frog to whatever is in local soil. Since your toads are a local species, that's not a big concern. As for the burrows, John would know if you could make that work, but I personally would recommend just picking up a heat lamp and a night time heat bulb to help them stay warm instead. That being said, I find the idea of letting them burrow and wait out the cold in captivity interesting.