Quote Originally Posted by USMCPOP View Post
I think the Bentonite is used in ponds to reduce leakage.

I have read that the really cheap, Special Kitty plain cat litter at Wal Mart is Bentonite. You want the kind that softens when wet.

http://answers.walmart.com/answers/1.../questions.htm
Thanks Pop for the link, I'll keep it in mind when I price the WT that Bentonite sells. sounds like their WT is processed or mined from a special geology.