Settings > Wipe Free Space drives

When will Wipe Free Space from Settings initiate?? Am asking because i had SSD Drive checked in Settings which is bad.

I always wipe free space manualy, but am wondering when secure deletion & wipe free space from settings inititiate?

Whenever you check the Wipe Free Space box in Cleaner/Advanced, and next run Cleaner, or if you r/click on Wipe Free Space in Cleaner/Advanced and select Clean Wipe Free Space.