Yes, It's Prime Time. The average consumer just does not realize how crucial primer truly is. Primer will seal in your stains, wooded knots from bleeding through and yes, even prevents wallpaper paste from re-activating. Zinsser Bulls Eye 123 Primer has been a stead fast reliable primer for me. Latex based, so it's easy to use - clean up is a breeze with soap and water. Be sure to keep sandpaper handy along with a can or quart of Zinsser Bulls Eye 123 Primer - It can really make your project elite!