Better Trash has a number of options, giving you control over how it works and behaves. Here is the full list of the options you can find in the Better Trash system plugin settings:

Show Exit Trash Button Select to show an extra 'Exit Trash' button when viewing the trashed items.
Show Trash Alert Select to show an extra alert message at the top of the trashed items view.
Auto-Delete Trash Select to permanently delete trashed items automatically after they have been in the trash for longer than the set number of days.
Delete After (days) Set the number of days after which trashed items should be deleted permanently.

Advanced Options

Disable on Components Select in which frontend components NOT to enable the use of this extension.
Log Path The path of the log file used to store the time of the last purge. The file 'bettertrash_lastclean.log' will be stored in this folder. Make sure your Joomla! setup is able to write to this folder.