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What should I avoid if I’d like to get my mushroom operation CNG certified?

You’ll want to be very careful about your choice of substrate; it can’t include byproducts of genetically engineered agricultural crops (like most cottonseed hulls and soy meal). You’ll need to have a clean water source, too. Review the standards to see if they’re a good fit with your practices, and get in touch if you have any questions. 

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