I forget what they call the stuff but it is the white press board with Formica on both sides used for closets etc. Anyhow I am making some built in closet shelves etc, trouble is this need to be assembled in the closet itself it will not fit easily otherwise. I would normally use dominos and glue but in this case I may want something a little less permanent. I don't think screws will hold in the particle board well. How do I join this stuff or is long screws the answer?