Disk cleanup using PowerShell - powershell

Question

I am trying to write a script for cleaning disks. All works except running cleanmgr. Can someone advise?
$objShell = New-Object -ComObject Shell.Application
$objFolder = $objShell.Namespace(0xA)
$computername = Read-Host -Prompt 'Enter machine name'
foreach ($hosts in $computername) {
#$temp = get-ChildItem "env:\TEMP"
#$temp2 = $emp.Value
#$swtools = "c:\SWTOOLS\*"
$ccmcache = "\\$hosts\c$\Windows\ccmcache\*"
$temp = "\\$hosts\C$\Users\*****\AppData\Local\Temp\*"
#$WinTemp = "c:\Windows\Temp\*"
$FreespaceBefore = (Get-WmiObject -Class win32_logicaldisk -ComputerName $hosts -Filter "DeviceID='C:'" | select Freespace).FreeSpace/1GB
#Write-Output "Disk Space Before"
Write-Output "$FreespaceBefore"
Write-Host "Removing Junk files in $ccmcache on $hosts." -ForegroundColor Green
Remove-Item -Recurse $ccmcache -Force -Verbose
Write-Host "Removing Junk files in $temp on $hosts." -ForegroundColor DarkYellow
Remove-Item -Recurse $temp -Force -Verbose
Write-Host "Finally now , Running Windows disk Clean up Tool" -ForegroundColor Cyan
Invoke-Command -ComputerName pc -ScriptBlock {Start-Process cleanmgr.exe}
#Write-Output "Disk Space after"
#Write-Output "$diskspaceafter"
$([char]7)
Sleep 1
$([char]7)
Sleep 1
Write-Host "I finished the cleanup task,Succefully " -ForegroundColor Yellow
}

Answer 1

2# Running Disk Clean up Tool
write-Host "Finally now , Running Windows disk Clean up Tool" -ForegroundColor Cyan
cleanmgr /sagerun:1 /VERYLOWDISK | out-Null
$([char]7)
Sleep 1
$([char]7)
Sleep 1

Answer 2

I know this question is old but for anyone still looking...
This link could provide a couple options, like the one below
foreach ($computer in $computers){
if(!(Test-Connection -Cn $computer -BufferSize 16 -Count 1 -ea 0 -quiet))
{write-host "cannot reach $computer" -f red}
else {& \\$computer\C$\Windows\System32\cleanmgr.exe /sagerun:1}}