I am posting this after giving a buyer advice today and thought I should share it.
When it comes to grow bags in general you should handle them as little as possible and with great care.
The filters on these spawn bags are only .2 micron so you can easily blow a leak in the filter patch by over handling the bag or trying to squeeze air out of the bag through the filter patch.Â
Leave the bags alone until ready to inoculate and be gentle and you won't have mold growing at the top of the bag where you blew the filter patch out and let in contaminants.
Never spray the filter patch while prepping the the bag for injection.
This is a great tip and will save you a whole lotta grief. :)