Watt on Earth are you doing?!

It's supposed to be the "ground" connection, usually a rod embedded in the earth to make it neutral. These people have put dirt/rocks in the bag to allude to a ground connection, but it's useless and might actually break something.

No, it works. That was what my great grandfather used to protect his computers and satellite TV on the farm around 1910-1920.

Oh I thought it was oatmeal lol!