want to put in 2 cents from louisiana. aqua jel. a type of drilling mud. it is a powder and can be put in in the water or just spread on the ground. will not harm fish or other animals. no costic ( spelling).the jel can be found at any drilling supply and about 10 yrs ago when i used it was very inexpensive. we put about 2 tons on an acre. it may be made from benzonite. but i works. everyone needs some louisiana advise and it may only be worth 2 cents.