clean-iislogs.ps1

#Save this file to C:\Scripts\clean-iislogs.ps1
#Run this command to create the schedule task:
# schtasks /create /sc DAILY /tn "Clean IIS Logs" /tr "powershell.exe -ExecutionPolicy Bypass C:\Scripts\clean-iislogs.ps1" /rl highest /ru system /st "03:00" 

$FilePath = "C:\inetpub\logs"
$FileExt = "*.log"
$maxDaystoKeep = 90
$DeleteDateTime = ((get-date).AddDays(-$maxDaystoKeep))

#Get a list of files to be deleted
$itemsToDelete = Get-ChildItem $FilePath -File $FileExt -Recurse | Where-Object LastWriteTime -lt $DeleteDateTime 

if ($itemsToDelete.Count -gt 0)
{
    ForEach ($item in $itemsToDelete)
    {
        Get-item $item.FullName | Remove-Item -Verbose
    }
}