The first natural surface to kill bacteria solely through structure was recently found.
How does one kill bacteria through structure you might ask. Well, the clanger cicada (a locust-like insect) has wings covered in an array of "nanopillars" which serve to stretch the bacteria's membrane and cause ruptures in the bacteria's membrane.
One of the lead researchers said the rupturing effect is more like "the stretching of an elastic sheet of some kind, such as a latex glove"
Kinda cool eyh?
Check out the article and the corresponding videos here: Insect wings shred bacteria to pieces
For added effect couple the video on the article with the Jaw's theme song
But seriously. Do it.