Fascinating you should mention an earth based probiotic Ariel. Acidophilus which I mentioned is a 'lactic acid' based probiotic. Which, as I understand, most are. The problem with these are that they tend to break down in the gut, so their effect is only partial.

Consuming small quantities of earth is actually (of course) quite natural. We used to do that anyway in our daily diet - before the standard human diet became horribly distorted. I've always been encouraged not to scrub all the soil of my veg providing that is, it is organic, and a trustworthy, ethical source.

If you don't have a clear source that you can trust, you could explore the possibility of this recommended earth biotic "Prescript-Assist" ...
http://www.candidastore.com/prescript-assist-60.html
(I can't personally vouch for it, but it does come well recommended).

Just before I wrote this, a lovely synchronicity came to me: I was clearing a wood pile at the bottom of our garden which exposed a fair few worms and slugs. I took a rest for a while, during which, a friendly blackbird I know, came to join me to feast on the worms I'd uncovered. I wondered if it would also try the slugs? Knowing that it would be difficult to digest the slime on its skin. At which point (it was like I had a telepathic connection to the bird), it picked up a slug and then began to wipe it with soil! It did this for about 5 minutes before consuming it. It seemed to confirm for me the value of earth based probiotics!

But only of course if you can trust the soil and the source!

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