Set the days to 270. Left browser idle for well over 5 mins. History from 18 months ago remained. Nothing deleted. Interface is not good. A delete now button would improve it. No confidence in it.

Zu jedem Topf gibt es Einen DECKEL! (oderETWAnicht?)

This is very easy to use History Cleaner for Firefox with just one-click.

It says history will be deleted after about a minute of no activity on Firefox. Very vague.

1. What is no activity? If I'm streaming a radio station, is that activity? If an app is constantly going out to look for new messages or something is that activity? If I run multiple profiles, must they all be inactive?

2. I would much rather be able to
a. Turn off the automated deletion (ON/OFF, not just setting days to ZERO).
b. Have a button to manually initiate the deletion.