I blocked off the bottom of the sofa bed by nailing 2 by 4's around the edges, but Nicki is still geting in by going thru the top. I have a sheet covering the sofa, but she just goes under it! What should I use to secure it? I think she would just pull out tacks... Sue Nicki (I used the litterbox, where's my treat???) Sue [Posted in FML issue 1985]