I purchased six of these and all six began colonizing in just a few days. Great products, super fast shipping and decent pricing keep me coming back to midwest. Thanks!
These Jars are super easy to inoculate and colonize quickly. I have tried the spawn bags and 1/2 pint jars and these are by far my favorite.
Everything arrived promptly and sterile! Will use again!
These seem to be colonizing very quickly, Highly recommend
Arrived on time, well packaged and as you can see working. Yes, check to tighten lids when jars arrive.