I take the Bentonite daily, one part calcium Bentonite to three parts water. Drink 2 ozs. three times a day on an empty stomach, and take psyllium once a week to scrape any buildup away from the sides of your intestines. It's worked very well to keep my candida in check, plus killed some worms at the same time. I don't know about chelating, because that's not what I was using it for. I use it to mop up the toxins from the strongyloides.