You may uninstall Yontoo and all supported features including BannerGadgets at any time by following these procedures below:
Windows - To uninstall from Windows, go to the Windows Start Menu and then to Control Panel > Add/Remove (or Programs & Features in Vista/Windows 7) and click Remove next to Yontoo.
Mac - To uninstall from Safari, Firefox or Google Chrome on a Mac, go to Tools > Add-ons in the top menu. Select the Yontoo logo and click Uninstall.