[powershell] How to tell 'PowerShell' Copy-Item to unconditionally copy files

The following PowerShell script works if the resources are not there.

  Copy-Item $src_dir $dst_dir$agent_folder -recurse

But if the resources are there, it will say:

+   Copy-Item <<<<  $src_dir $dst_dir$agent_folder -recurse
    + CategoryInfo          : ResourceExists: (C:\Users\Pac\Desktop\Agents\Agent0\lib:S
   tring) [Copy-Item], IOException
    + FullyQualifiedErrorId : DirectoryExist,Microsoft.PowerShell.Commands.CopyItemComm
   and

What do I have to add to the command so that it will unconditionally copy the files?

From the documentation (help copy-item -full):

-force <SwitchParameter>
    Allows cmdlet to override restrictions such as renaming existing files as long as security is not compromised.

    Required?                    false
    Position?                    named
    Default value                False
    Accept pipeline input?       false
    Accept wildcard characters?  false