Perhaps they did, but my experience with "removers" is they kind of make a mess. I have used paint
strippers and such and while effective, you still have to scrape the goo off with a putty knife anyway, and while it requires far less pressure with the knife, the scrapeings are sticky, gooie and all around harder to deal with. It's the best answer for roundy, hard to reach corners and such, but I like the ease of clean up with mearly heating
the finnish and scrapeing. My girl follows with a small shop-vac or a paper bag anywhere the shaveings may get overboard
and clean up is dry and pretty clean, nothing gets in your clothes and you can take breaks without worrying about accidents with half digested cetol all around you. That's how I see it anyway, other oppinions may differ.
All the best,