Recycle Bin

Empty the recycle bin

# Solution 1
Get-ChildItem -Path 'C:\$Recycle.Bin' -Force | Remove-Item -Recurse -ErrorAction SilentlyContinue
 
# Solution 2
$recycleBin = (New-Object -ComObject Shell.Application).NameSpace(0xa)
$recycleBin.Items() | ForEach-Object -Process { Remove-Item -Path $_.Path -Force -Recurse }
 
# Solution 3 (PowerShell v5)
Clear-RecycleBin -Force

Source: http://powershell-guru.com/powershell-tip-74-empty-the-recycle-bin/