Bentonite Clay Foot Detox is 8 ounces of Epsom Salts and 4 Tablespoons of Bentonite Clay along with a Recipe. 
 
Bentonite Clay Foot Detox Recipe:
1/2 Cup of Epsom Salt
6 Quarts of Very Hot Water
2 Tbsp Bentonite Clay
1 Tbsp Apple Cider Vinegar 
 
Directions:
Dissolve the Epsom salt in hot, (almost boiling) water in a basin, bucket, or foot tub, and set it aside.
 
Mix the bentonite clay and the apple cider vinegar in a glass or plastic bowl (not metal) to create a paste (it should be a yogurt-like consistency}. Add water if needed to make it smooth.
 
Coat your feet with the mixture, and allow to sit for 10 minutes or until it dries completely. You will feel a pulsating sensation from the detox working. 
 
Place your feet in the hot water and Epsom salt mix and soak your feet for 15 minutes. The clay will slowly dissolve and fall off. Once the clay has dissolved, take your feet out of the water and pat them dry.