so my door frame and door looked like a rinosourus was making love to it, so a friend of myn replaced my door and door frame with a new one! didnt pay a dime except for the door and the door frame! (i take care of his computers for free so were even), anyways besides for cement or whatever its called he also used polyurethane foam to seal the holes between the door and the frame, the foam is all over my new door frame! what is the safest way to completly remove this foam without damading my door, this stuff got on the wall near the door to which i just did a nice plaster job on. thanks for your reply in advance, and id be glad to add a picture if u need to see what it looks like here!