thanks! i looked to see if anyone was selling ladybugs on craigslist but couldn't find any. I know there is a garden/feed store on the other side of town that was definitely selling them earlier this spring but I didn't have a need for them at the time, and i haven't noticed them selling any the last few times i've popped in.
I think i'll stick with the soap/water solution and the garlic tea for now to just keep fighting them off, until it's time to recoup and prepare for spring. of course, when spring gets here if we've had another mild winter it's armywormpocalypse round two for me, which is a whole 'nother set of challenges.