also consider colosan

http://www.amazon.com/exec/obidos/tg/detail/-/B0001SR15I/qid=1137633454/sr=8-...

above is a direct link to where I get mine.
please scroll down and read about how it oxidises and disintegrates,
old fecal waste off inner intestines.

Colosan will cleanse you in colon and small intestines
without harsh scrapings of the psylium husk and also
will NOT constipate you as internal use of Bentonite does.
Bentonite also dehydrates you, depletes good nutrients internally.

As far as detoxing like metal toxins etc,
there are other sources youcan use,
such as cilantro metal detox cleanse for 3 weeks,
magnetic clay baths (use your Bentonite like this) or pascalite.
Mung beans are good for metal detoxes also.

Hpoe this helps you in your decision making.
The container of Colosan will last you about 6 months
if you follow the one week 2 dose schedule , then once a week
one dose for one day as a maintenance.
I am small and short and sensitive.
I have found that 1/3 a teaspoon , once a day,
is sufficient for me.
so a container for me goes even farther.

Start slow on a day off, and start with 1/2 a dose then
workup to a level you feel comfortable with.
If you feel like farting go to b room, (laugh)
don't take chances.

The taste when you mix one dose with water is almost tasteless.
just a slight chalky texture (if that) to the water.
very simple to do / no muss no fuss quick easy way to clean out
your waste elimanation system from colon down and years of built up waste.

Love,
Ami Joi Benton