...You may be right about the Diatomaceous Earth...there may be a 'food grade' quality. You might like to check this out. You could 'search' the CureZone and see what others have said. (Near the top right-hand corners of the pages.)
...Be a little cautious that you don't become addicted to enemas. Some people have, and it isn't any fun, they say. Perhaps try a little of each of other styles of 'toxin relief'. Baths are good. Of course, you know me...I love the way I feel after a footbath/full bath in a 1% solution of crystal mineral salts. Even then, I have only done three footbaths and one full bath.
I haven't looked at other brands since mine came from http://www.heartfeltliving.com and they worked well. I found them at my local health food store.
Even after four rounds of Humaworm I am still noticing how I feel and what I'd like to try next. Nibbles of Brazil nuts are great. 'Organic' veggies, too. And I like all the things that seem to boost glutathione levels...like raw okra pods. Just some of my preferences.
The grapes are coming in the garden right now.
As always, I think Humaworm is a rhythm, more than a 'pill', and I alter everything else, as I feel inclined.