used cardboard w/ 1 side removed-placed chopped up stem bases inside the valleys of the paper. used several different types from local store. 3 of the 5 types did start and produced mycelium. " BUT " left too much water inside the cardboard in the ziplock. result was that the soup that collected in bottom of bag went bad prior to being able to procure logs. so my comment is to be sure that cardboard is wet but not dripping out water before inserting into ziplock.

went ahead and procured hardwood sawdust - soaked in water / hydrogen peroxide solution then used my "spoiled cardboard" to try and start in plastic covered trays.

starting to see a bit of white growth spots ( I hope) and just observed some very very tiny growth that are starting to pop up in one tray. these may be the start of some mushrooms popping out.

will be starting another group soon and will be sure to correct these past mistakes and get the white mycelium moved onto the wet sawdust planting trays quicker.

then if trays start production will use as a starter for other trays, bags and logs

and eat a few along the way