How do I fully uninstall an app?

[Guest Cheapster]

I thought I had uninstalled Camera 360* using Settings > Applications > Manage Applications but when I connect the phone via USB to my Mac I can see a Camera 360 folder and two other folders/files that may be associated: "Freerange 360" and "c360_debug.txt" SF Orange files.tiff.

Is it safe to trash these?

*Not recommended. It keeps turning on roaming and burns up battery life