I just googled it..and from what I understand it does is permanently delete deleted files on your HDD. So, it's not really going to de-clutter it, because the files aren't taking up space, even though they're still on the drive (the deleted files just get written over anyway, and that's all that command line prompt does).
Laptop: MSI GT70 2OC-059us | i7-4700MQ | 16GB | GTX 770m | 500GB SSD / 750GB HDD | 17.3" | Win10 Pro
Desktop: 4690k | 12GB g.Skill RipJaws | GTX 970 | 520hx | Z87X-UD4H | Corsair Vengeance C70 | Corsair H110 | Acer 25" | Acer 22" | Win10
Mobile: Samsung Galaxy Note 5
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