jeeperscreepers said:

What is the difference in material between pasturized and unpasturized? Let's say I got 5# unpasturized and pasturized myself? How much more would I have? I'm assuming the pasturized has more water content and is heavier.

Cuz I could get 5# unpast straw + 5# unpast poo for $35.
OR
I could get 10# past 50-50 + 5# free for $40

I could probably pasturize myself and get more for cheaper if the pasturized stuff has much water content.

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The Unpasteurized Dry Substrate will yield about 3X the initial amount after proper hydration. So 5lb. will get you 15lb., 10lb will get you 30lb., etc. If you want to make your own 50/50 mix get half the amount of Shredded Straw (2.5lb) per 5lb of Dry Substrate, this will give you equal volume. Yes you will save substantial $$$ if you pasteurize yourself.