In a totally different application, the yucca is widely used at sanitation plants. In this situation, the saponin accelerate the breakdown of organic waste. This is possible because they directly influence the development of microscopic plants (bacteria) which are vital to the waste disposal process. In the early 70’s, the yucca’s ability to withstand stress and to accelerate the breakdown of organic waste prompted the investigation of its use in promoting animal and human health. By that time, its non-toxic nature had been well established not only by traditional usage but by the FDA. Since 1965, yucca has been on the famous GRAS list (Generally Regarded As Safe by the FDA) and used as a food flavoring adjuvant. Further testing has shown the absence of any evidence of absorption through the intestinal wall or of harmful side effects.