"John McMillan" wrote in message
...

There's a real gap in the market for a book titled "Security Plantings",
describing all the spiny thicket forming plants which are actually
in some other way horticulturally attractive. It would have a section
on screens and possibly a (very thin) section on attempts at cat-proofing.

Found these:
Catproof : http://www.webmesh.co.uk/hedgetodeter.htm
Totally mad matress recyling !: http://www.users.on.net/~arachne/mattress.html

Jenny :~))