I've been looking at making my own grounding sheet using materials such as those found at this website: http://www.lessemf.com/fabric.html

The "EX-STATICâ„¢ CONDUCTIVE FABRIC" which is found around the middle of the page looks pretty good and is the cheapest option. However the resistance seems to be 1,000,000 ohms (10^5?) per square. I don't know much about electronics, but the more expensive fabrics are said to have resistances of like 0.5 ohms, so I assume the less is better ?

Does anyone know if that Ex-static conductive fabric would be good for sleeping earthed? It says it's ok on the website but I want to be sure myself, because the difference between 0.5 ohms and a million ohms seems like a lot to me.