I just ordered a new one because I think my old one lost its conductivity. I no longer feel benefits from it. I tested my outlet, and it's fine. I read on the Earthing Institute site that sheets can lose their conductivity if you don't wash them enough. At the time I got mine, they did not have a specific recommendation, but now they say to wash the sheet every week or every two weeks to help it retain its conductivity. Other people have reported the same thing I'm talking about. I wash my regular sheets once a week, but haven't washed the earthing half sheet nearly that often until now. Unfortunately, it was too late for my old one. When I started washing it once a week after reading the new recommendation, it did not help. I'm also going to start washing my body pillow case once a week since it comes in contact with the half sheet. In the past, I've washed it infrequently because it is 6' long and an absolute bear to wrestle back into its pillow case. Anyway, I'm hopeful I'll get benefits from earthing again when I get my new sheet. I never felt pain relief from it, but it did really help my sleep. Also, for the first time, I started getting good lab results for inflammatory markers.