I've read that too. Back in the early 90's I used in externally around the dogs and the flower beds. I never used it internally on the dogs and was always skeptical when it became popular a few years ago.

I can't really comment on what they do or do not to internal worms. I would think they do nothing as I have read.

The non food grade DE that we used in the chemical plant did not go into solution with moisture or water alone. They were crystalline and the crystal dissolved and/or returned to solution in water if the water was heated to app. 93C. The second way was to adjust the Ph way up or way down, less that 5.5 or more than 9.5. The crystal remains intact in water that has not been heated nor had the Ph adjusted. The dog's stomach/digestive enzyme more than likely nullifies the 'cutting action'.

What does happen using them externally is that rain/water washes them to the ground and it returns to the ground where they are not nearly as effective as they will bind with dirt/grains of sand, etc. and do no damage to a bug/flea/tick.

A dusting that remains dry is far more effective. EWO




Quote Originally Posted by CA Jack View Post
It is pretty much quackery.

There was a good debate on this subject awhile back. (As well as another.)

The subject comes up from time to time, and the studies show that the product does actually work NUTRITIONALLY ... but does zippo for internal worms.

This whole "rough edges of the DE" is only correct when the product is DRY ... and flies out the window once the product is ingested (and thereby moistened).

It is quackery to use it for internal parasites ... and most people don't know how to differentiate between "opinions," claims, and "advertisements" (which can say anything) ... and published scientific studies (which are held to a standard).

Ads and people "claim it works"; the published science says it doesn't.

Jack