How do I clear the downloads folder?

How do I clear the downloads folder? I swear there used to be an option for this when I right clicked on the downloads folder that is on my bottom bar but I don't see one now. This is making me crazy.

Also, when I click on the bottom bar Downloads folder to display the items in the Downloads folder, I've selected it to be arranged as a fan and by the date added. I've downloaded two copies of the same item and did this back to back because I didn't see the first download in the folder once I'd downloaded it. I don't see the first of the two downloads unless I open the whole folder in its own window. Shouldn't I see them both at the bottom of the list since they are the two most recent downloads? I'd accidentally downloaded duplicate copies previously and it had displayed them in this manner.

Please help!