Deleting objects in the Squid cache ?

Hye all squid users,

Since a 2 weeks I'm running the squid proxy and have only learned know
how to use the 'cache_stoplist_pattern' option.

I would like to know if it's possible to delete or ask Squid to delete
the objects that come from a few domain names (those that I'm going to
put in the 'cache_stoplist_pattern' option) ?

I'm maybe asking a stupid question :-) because MAYBE Squid deletes the
objects after a expire delay or something similar...

I would really like to not have to delete (and restart from zero) the
cache directory to preserve the objects he already has.

Thanks for your help,
Anthony.

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