Check To See If Folder Or File Is Present On A Remote Server

I needed to check for an installed program on a number of remote servers without having to log in to each one individually. Unfortunately, whilst the program is listed in Control Panel > Add / Remove Programs, it does not get returned via Powershell when running;

Get-WMIObject Win32_Product

Running the following script allowed me to import a list of servers then search for a file or folder on those servers. Following the search the server name and result of the search is outputted to the screen;

#Import list of servers
$cns = Get-Content "C:\Users\LangridgeJ\Desktop\list-of-servers.txt"

#Scan for selected file or folder
foreach ($cn in $cns)
{$path = Test-Path "\\$cn\C$\Path\To\Folder\Or\File"

#Write output to screen
If ($path -eq $true ) { Write-Host $cn 'Files or folders are present' }   
        Else { Write-Host $cn 'No files or folders are present' } }