[Shielding: Clay] Where to get clay

States that have caliche (clay) soil: Texas, New Mexico.

Bottom and banks of rivers.

Garden nurseries which sell water lilies and lotus sell clay potting mix. On May 26, 2017, I drove to a nursery. They did not sell clay and referred me to a pond store. I asked the employee what percentage of clay is in the 4 quart bag for $10. He called the supplier. 25 - 30% clay. I wanted 100% clay but purchased it any way to use the next day. I packed a Fomentek bag with the potting mix and water. It did not shield as well as the 100% clay, sea salt and water Fomentek bag. I emptied the bag to reuse it with 100% clay and water.

Michaels arts and crafts nation wide stores sell clay. I purchased a five pound box of Marblex mexican pottery red clay by Amaco.

http://www.michaels.com/amaco-marblex-clay/10609586.html#start=6

Solid rock. I soaked it over night in water. I pinched off pieces of clay to soak another day in water. The red clay stained the exterior of the ice bag, zippered pillow protector covers and my clothes.

Michaels also sells 10 pound boxes of clay by Craftsmart. The clay is pre softened.

http://www.michaels.com/craft-smart-natural-clay/M10114031.html?dwvar_M10114031_color=White#start=9

Craftsmart's terra cotta (reddish brown) clay stains. Craftsmart's gray clay and white clay do not stain.

Laundry detergent and Bon Ami could not remove the stains. Clay sticks to fabric. Scrub the clay off with a wet sponge. Pour rubbing alcohol into a spray bottle. Spray the stains. Scrub with a damp sponge. Wash in washing machine.

Black clay in FOMI's clay packs does not stain.