To delete a file, simply tap the file, and press delete.
Files that are stored in Dumpster will remain there for as long as you have the app installed. If you’d like, you can also change your device settings to auto-clean after a predesignated amount of time.
To do so, tap on the button located in the upper corner of the app’s homepage. Select Auto Clean.
Choose how long you would like Dumpster to save your deleted files for, before permanently deleting them from your device: