These bags have always worked great for me. And they’re a great price. Highly recommend!

The premium grain bags seem to colonize faster. Started these with the same agar plate as previously used on straight rye berries, it's cooler outside and this is faster than before.

First time purchase of this fantastic product, made easier by the excellent and completely accurate description. Expertly packed and shipped. Arrived quickly with no hassles. Highly recommend!

Super fast colonization I an understatement. I highly recommend this product & will definitely purchase again in the future.

These bags have given me the highest success rates when it comes to successful colonization without contamination compared to other vendors.