How can I make my interior closets smell like cedar?

Hi Maryann, you can purchase cedar essential oil, it smells divine!

You could also purchase a cedar fence picket and have it cut into smaller sized lengths. Place in a few different areas in your closet. When the fragrance fades, sand the cedar pieces a bit and the scent will remain. You can do this multiple times.

I used this for my closet https://www.simplenaturedecorblog.com/how-to-create-a-sweet-cedar-closet/

You can buy cedar blocks, cedar hang ups or cedar balls to use in your closet. Amazon has a few different varieties. I just typed in "Cedar Blocks for Closets" on the Amazon site and they popped right up. Most are less than $20.00