Thanks,, I don’t think we have the Wonder Bark here. I had some coco core and put it on the bottom and dampened and packed it Dow and then used a bag of Reptibark on top . She seems to digg a lot and is really active.See if you have Wonder Bark in Canada. Also, "fine" doesn't mean fine particles, the "fine" grade of orchid bark has particles that are just under an inch each. And, like Tom said, you keep it moist and there is not dust.