I may be taking in a Russian that needs some over due upgraded care. I have the outdoor enclosure. My question is this. The substrate, I already know is okay. However, it is placed on top of the weed control fabric that you lay down under substrate in your flower beds, etc, to help control the weeds. Do any of you know if a Russian would be able to dig through the weed fabric? The fabric is approx. 4 inches deep and I am actually going to put another layer on top. I am thinking, if he can't dig through it, the fabric stays. If he can dig through it, I will have to pull it out, as I am afraid he could get stuck under it. Does anyone have any experience with this kind of fabric in their Russian enclosure. All opinions and actual experience welcomed.