How to Clean up Mac Trash Temp Files (3 Steps)

Two-finger click the trash icon in the dock on the Mac desktop. Another option is to double-click the trash icon to open the trash can window.
Click on 'Empty Trash' in the menu that appears after two-finger clicking. After double-clicking, a new window appears. Click on the button that says 'Empty' at the top right corner of the window.
Hit the power button and click on 'Restart.' This shuts down and turns your computer back on, which clears the temporary files.
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