I moved into an almost-100-year old house with 2 layers of wallpaper...the youngest of which was 43 years old. Using a paper tiger to score the paper and purchasing a pump-style garden sprayer (for under $20) into which I put hot water and DIF, then scraped with a putty knife, did a terrific job. Just keep the paper damp and be patient. The longer you wait and wet, the easier it is to remove. I did a 12x13 room with 2 layers of very old wallpaper in about 2-1/2 hours..and a lot of that was waiting time. I did wear rubber gloves, but mostly because the old paste was very sticky. Good luck.