I haven't used the oatmeal, but everything else you mentioned in feeding my new worms. I had a few "local" ones I was experimenting with, but in addition to what you use, I add a cup of calcium carbanate & crushed alfala pellets. Today I added some watermelon rhine that I ran thru the food processor. Funny, I use this same receipe to feed our crickets.:D I can put this down in the cricket cage and they will drop off the walls and go right to it! It is something to watch... I tell everyone when they buy our crickets, "these guys are so zipped up ..they will chase the fish!!
PD
PD & Judy's Bait Shoppe
Augusta, AR