> Im not cleaning it on a regular basis :-) only twice in 7 months now.
> But wondered if there was an easy automatic way. Trawled through the
HP
> site, but could not find anything of relevance.

Amen.  I can never find useful stuff on IBM's or HP's sites, though I
have found rich technical gems on each in the distant past.  Here's one
from Overland Storage that is a gem, and should be on HP's site (if it
is, I never found it):

 
http://support.overlandstorage.com/jive/servlet/KbServlet/download/2383-
102-63/LTO_Cleaning_wp.pdf