Need to remove dormant computer accounts from active directory. What's a good (paid or free) solution?

Need to remove dormant computer accounts from active directory.  What's a good (paid or free) solution?  

Also, does anyone know the default setting (in days) in which a computer account's status changes and must be re-added to the domain?  Thanks.
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LB1234Asked:
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Brad GrouxSenior Manager (Wintel Engineering)Commented:
The term you are looking for is "stale," specifically stale computer objects. This TechNet blog post takes you through all of the steps - http://blogs.technet.com/b/ken_brumfield/archive/2008/09/16/identifying-stale-user-and-computer-accounts.aspx

Here is a script to find stale computer objects in Active Directory - http://gallery.technet.microsoft.com/scriptcenter/7bc5bc1c-e934-4ce1-8a77-3b0105807402

Here's one that utilizes Quest's free tools - http://gallery.technet.microsoft.com/Active-Directory-Stale-f775cc22

If a machine is offline more than 30 days it may become stale. Best practice is generally to query machines who have been offline for 90+ days. Stale machines won't be kicked from the domain, if they are plugged in or attached to the domain at any time they can log back in... thus, it is a good idea to clean out stale objects from time to time.

This blog post shows you how you can send out an automated email with stale accounts - http://pipe2text.com/?page_id=121
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Joseph MoodyBlogger and wearer of all hats.Commented:
Brad pretty much got you covered. If you prefer safety, you can disable the stale objects and move them to a dedicated OU. After a certain period, you can delete those objects.

http://deployhappiness.com/managing-stale-computers-and-users/
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LB1234Author Commented:
I wound up using AD Manager Plus from Manage Engine, but thanks!
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