Based on my earlier work: ClearAllCookiesButton 0.1.4
This extension was completely re-written with the new 1.14 SDK.
***UPDATED: Clear All Cookies Button 184.108.40.206 has been updated to use the latest 1.15 SDK.
1. Redesigned interface: Now it's pretty.
2. New Icon.
3. Added right click to button to open Cookie Manager Window.
4. Restartless Add-on.
NOTE: Compatible with Firefox 20+ ONLY: If this new version is not compatible with your version of Firefox, please see the old version for better compatibility. ClearAllCookiesButton 0.1.4
INSTRUCTIONS FOR USE:
1. Install Add-on.
2. Enable Add-on bar by right clicking on the top window bar of Firefox and putting a check on "Add-on Bar".
3. Left Click the Cookie Icon to delete all cookies, Right Click to open the Cookie Manager.
NOTE: The cookie icon will be on the bottom-right of your browser window on the Add-on Bar, but may move slightly depending on what other extensions you have installed.
It is recommended to leave the icon in it's default location (or at least on the bottom bar, issues may occur if you try to move it to the top bar or elsewhere.)
(Please do not rate 1 star because you did not read the instructions above!)