I thought Martian soil was toxic. Wikipedia: "Toxicity. Martian soil is toxic, due to relatively high concentrations of perchlorate compounds containing chlorine". Do those simulants actually contain those compounds ?,(reply>), These stimulants do not! Some real researchers are working with stimulants with added perchlorates though. The process of removing them is relatively simple - rinsing with water or using perchlorate metabolising bacteria,(reply>)," Iamtop see <a href=""https://www.youtube.com/watch?v=rBPLgtfouIs&amp;t=2m44s"">2:44</a>"