Exchange 2010 - Delete items from specific folder in users mailbox

We are running Exchange 2010 SP1, I have some users with large mailboxes, and quite a few items in their 'Deleted Items' folders.    Tried having them delete, but outlook hangs.  OWA is ok, but the users are part of our call center, and 'dont' have the time' to clean up their mailboxes.  Looking for a command to permanently delete their Deleted Items folder.  I've tried the 'Search-Mailbox' command, but can't seem to get the parameters correct.
i.e.  Search-Mailbox -Identity jdoe -TargetFolder "\Deleted Items" -DeleteContent
Response asks for TargetMailbox:  jdoe
Response 'Y'
Response:  Warning: the source mailbox 'jdoe' will not be searched because it is the target mailbox.  The source mailbox cannot be used as the target mailbox.
Moving forward, it's a matter of training the users to clean up their mailboxes.
Thank you
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Robby SwartenbroekxMSP engineerCommented:
Give retention policies in Exchange a look. I use them to clean out the deleted folders, after 30 days, mails are automatically deleted

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Will SzymkowskiSenior Solution ArchitectCommented:
Using the Search-Mailbox cmdlet you cannot specify a subfolder, like you have requested.

AmitIT ArchitectCommented:
If you ask my suggestion, first you implement mailbox quota limit. That will force user to clean up their mailboxes and also avoid issues on server side.
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trinity2007Author Commented:
Had planned on looking at Retention Policies for that purpose, but management doesn't want to go down that road.  New to this environment and looking for ways to do some cleanup...have some users with items dating back 3-4 years in their deleted items folder.  They even use the Deleted Items folder as a repository to store their emails, with subfolders and such.  They are use to keeping these items, just didn't want to delete them - 'just in case they need them'.  Lots of training and changing of the mindset.   The problem is with the mailbox sizes reaching up to 10GB in size, cached mode, outlook is having difficulties keeping up and loading.  
I was just curious, if I could at the very least get some of these cleaned up in the interim with a command.
trinity2007Author Commented:
Unfortunately, management will not allow me to set mailbox quotas...there are none set in the environment.  I had done this at previous employer, but apparently they have never set them here and are not willing to do so.  We have established offline archiving to the cloud, and I thought I would be able to set Retention Policies for a year to delete, and set quotas, but even with that in-place they are not ready to do that.  Hmmmmm...
AmitIT ArchitectCommented:
We suggested you best possible option available with in the product. You can review and take best decision according to your organization. I understand your challenge, even I am having same issue with one of my client. From my end, I monitor disk space regularly and update customer daily 4 times. Rest customer need to decide.
trinity2007Author Commented:
Yes, agreed.  I'll have to put together a contingency plan.  Thanks to all for your responses.  Appreciate it!!
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