Dif Gel Wallpaper Stripper For your most stubborn wallcoverings and adhesives, choose Rust-Oleum® Zinsser® DIF® Gel Wallpaper Stripper. This ultra-powerful, enzyme-based gel clings to the wall, stays wet and does the work while you wait. The low-odor,... MSRP: Was: Now: $9.99 Add to Cart