I'm trying it on some of my potted plants for now. My raised bed was made last spring, so it's still young. I believe I saw the end of 1 earthworm when I was transplanting out a few weeks ago, which was nice.
The directions are 2 Tbsp per gallon once a week.. The two I bought are NPK 9-4-12 and 11-3-8. Hopefully you can read the text from the attached picture for more info.
Was using Jobe's organic, but don't want to keep buying fertilizer online, and this is the only water-soluble OMRI I could find at my Home Depot.
Finally went to The Natural Gardener on Saturday to try to find some, but they were insanely busy, so I bolted.