USBMate 4+

USBMate is an app which optimizes and accelerates the operation of USB Flash drives, external hard disks and Flash memory cards.
---Now Ready for Yosemite!---
-MacTech rating 8 out of 10-

Use USBMate every time before ejecting your USB Flash drive and:
- its contents will be clean and optimized, without useless junk. All temporary files left by Snow Leopard / Lion / Mountain Lion or Windows (.DS_Store, .Trashes, .Spotlight-V100, Thumbs.db, etc.) will be erased.
- it will be made secure thanks to the built in anti-virus!

Every time USBMate is launched, the anti-virus automatically checks and purges the USB Flash drive’s contents of all AutoRun viruses!

All you have to do is launch the app before ejecting the USB Flash drive: A few seconds later, it will be optimized, clean and secure!

Remember: Snow Leopard / Lion / Mountain Lion / Windows put temporary files and other junk in your USB Flash drive every time you use it. Launch USBMate each time before ejecting a USB Flash drive, and it will stay clean and secure! That’s because only USBMate has a full-featured anti-virus program!

When you erase files from a USB Flash drive, they’re only moved to the trash. The data itself isn’t erased. Use USBMate and see how much free space is really left in your USB Flash drive.
It’s one of the most practical utility apps to use every day with Snow Leopard, Lion and Mountain Lion.