Tips:
The fastest way to delete history:
Double-click on the Delete History Free desktop icon.
Click the 'Tools' button in the program toolbar.
Select the What to Delete item.
Click the 'Quick select' button.
Click the 'Delete all selected items' button or click 'Delete All' More details...
Delete search history in Firefox:
Double-click on the Delete History Free desktop icon.
Click the 'Tools' button in the toolbar.
Select What to Delete -> Browser History.
Select 'Firefox' and check the 'Clear Browsing History' option.
Click the 'Clear' button or click the 'Delete All' button in the program toolbar.
Delete Firefox search history automatically on browser close:
Double-click on the Delete History Free desktop icon.
Click the 'Tools' button in the toolbar.
Select What to Delete.
Select the Delete selected browser history automatically on browser close option.
Select What to Delete -> Browser History.
Select 'Firefox' and check the 'Clear Browsing History' option.