Requirement to obtain Erase switch
1. Mozilla Firefox
2. Mechanic addon
3. Facebook Manuscript
Delete All Facebook Messages
Actions To Remove All Facebook Message In Solitary Click
1. Open Mozilla Firefox. If you do not have then download it from Here
2. Now install Mechanic addon from Here
3. Reboot Firefox after installation is total.
4. Now login to your Facebook Account( in firefox browser).
5. Go Here and also click "Install" to set up Facebook manuscript.
6. Now follow steps in Firefox( also shown in picture below) in your Facebook account tab
Tools- > Greasemonkey- > Facebook Message Delete switch.
7. Open Messages as well as you will certainly get a button similar to this at the ideal most side of your buddy name:
This switch will delete your chat with your friend with a single click with no confirmation. Take pleasure in people!