THE WHAT IT COMMANDS MAKES SHURE YOU ARE DELETING THE RIGHT PERSON
PS C:\> Remove-ADUser jdoe-whatif
What if: Performing operation "Remove" on Target
"CN=Jack doe,OU=it,OU=Testing,DC=MYDOMAIN,DC=local".
WILL FIND ALL UNCHANGED USERS AT LEAST 90 DAYS
PS C:\> get-aduser -filter "enabled -eq 'false'"
-property WhenChanged -SearchBase "OU=USERS,
DC=MYDOMAIN,DC=Local" | where {$_.WhenChanged
-le (Get-Date).AddDays(-90)} | Remove-ADuser -whatif
My Spiceworks Post
https://community.spiceworks.com/scripts/show/3270-ad-delete-a-user-account
