i dunno if anyone posted it yet, but ive used one of the roller-tools to prick lots of holes in the wallpaper b4 using the gel
http://www.walmart.com/ip/17011348?w...l5=pla&veh=sem <----cheap
http://www.toolking.com/zinsser-2976...FW3ZQgodB28A9g <--- better
after pricking the holes, then use the gels or the mixes with warm water, comes off easy peasy