[squid-users] stale files on disk

[Hussam Al-Tayeb]

I am using squid 3.1.23 and not planning on migrating to a higher version for 
another few months.
squid says 8 Duplicate URLs purged
It will not clear the actual stale files form disk
so cache.log says there are 8 less files than find command says.
I fall into this situation once every few weeks and I end up purging the whole 
cache or restore a back up of the disk cache.
Is there any way to clear the stale files from disk instead?