We've pulled most of it off, and have just the remnants of the suckers. This
stuff essentially began to grow IN to the wood. The house was painted a few
years ago, but will need it again soon. What's the best way to get this
residue off?

And, is there a better way to get the living ivy off, that might leave less
residue? All we did was pull it from the bottom, then scrape the residue
with a steel scraper.