Can I Merge Outlook PST Files

Can I merge Outlook PST files when I have numerous Outlook files together into single file? Of course you can. Now, use PST merge software to merge Outlook PST files at once to single PST file without many attempts. The software do not give you chance to think that ?can I merge Outlook folders? ?can I merge two Outlook files?. Because the software is gives you convenience to merge files together.