Substrate Question

[Cornishninja]

Yes, I know, another substrate question. You must get millions of these.

I've done all the reading about it, and know what I should/should not use, and am picking up some aspen bedding (Which seems to be pretty highly recommended) on Friday morning, unless something better comes up between now and then. However, I have a question regarding the substrate I am using now, and how urgent it is that I stop using it... AKA, whether I switch straight to the aspen right away when I get it, or whether I can keep using the stuff I have now up first. Now, to be clear, the breeder I got the snake from sold me this first substrate, saying it was what they keep their snakes on, and has never given them a problem at all. But something bothers me about it, it's hard, pointy, and not particularly good at keeping the cage base covered. Here are a couple pictures of it, since I have no brand name or details... all I can tell you about it is that it is (according to the breeder) not pine. Despite that though, I feel it my responsibility to do a check and make sure that my snake is on a decent bedding for him/her, regardless what the breeder said.




So simply, do I need to get the snake off this stuff asap, or would it be okay to use the rest of the bag of this up? I'm quite alright with either way, I'm just trying to make the right decision.

Thanks for any advice!

-Cornishninja