Earthing Blog
Start with the outlet, not the product. A step by step check of outlet, adapter, cord, tester and surface to find where the connection is actually breaking.
How Long Do Grounding Sheets Last? When to Replace Them (and When You Really Don't Need To)
There is no expiry date. How to test whether your sleep product still conducts, what actually wears out, and why the cord is the first thing to rule out.