|Is it the actual poop stuck to the floor or just the remains
stuck to the wood? I would say scrape it off with a scraper
or putty knife. Then you would have to sand the area to take
the stain out, but I would seriously consider replacing the
flooring. Even if you get it off the surface the smell will
return every time there is moisture or humidity in the air.
You could try an enzyme product to remove the smell, but
if it has been there that long, you may never get it out.