The other family of things like the marconite are intended as cement additives that allow you to turn steel cast in concrete such as rebar, or in my odd case, anchor hooks for antenna mast guy lines, into things that are very well earthed. Unlike the cat litter in the mud, it does not slowly leach away over any sensible time period.

electrical Bentonite is chemically similar to some brands of self-clumping cat litter and the latter is more easily available, and  at a push ...

Both benefit from siting near the rain water soakaway if there is one.

Mike.

Gypsum/bentonite mixes are routinely used for earth electrodes to reduce the contact resistance.  It is a hygroscopic mix and benefits from an initial  good soaking when it is installed.  If you interested I can pass on the  gypsum bentonite mixing ratio.

Well there is certainly no harm in knowing - though if its only a mix of gone-off plaster powder and cat litter then the magical mix maybe  overpriced ;-)

Mike.

Well there is certainly no harm in knowing - though if its only a mix of gone-off plaster powder and cat litter then the magical mix maybe  overpriced ;-)

Mike.