Why do I still have a notification area icon of a program I've deleted?

I downloaded this program called ExpoThemes, decided to delete it, and have gotten rid of all traces of it from my system. When I enter the letters "ExpoT" into Search Everything, they can't be found. And yet, in the Nottification Area Icons control panel, it's still there. Why is this?

 

Now this is where CCleaner comes in. Open CCleaner and scroll down to Advanced and check Tray Notifications Cache. Run CCleaner. Then, open Task Manager > Processes. Click explorer.exe and then End Process (bottom right). Don't be alarmed at what happens. In Task Manager, click File > New Task (Run...) and type explorer. Click OK.

 

Thanks. I've just run CCleaner, but I can't find explorer.exe under Processes. Is it aka Windows Explorer?

EDIT: I tried it anyway, and it's worked. No more ExpoThemes. Thanks.