5. Do I need to use InvisiLock magnet if I use the ActiveWall primer?

Yes, the ActiveWall primer is a non-toxic latex product with iron particles in it that turns your wall into a magnetic receptive surface. Please note that a wall that has ActiveWall will attract an InvisiLock magnet but is not magnetic so it will not attract the MagnaMedia without the layer of InvisiLock applied to the painted surface.