Health food stores might carry pure DE, but read the label. If it contains Bentonite [Clay], you don't want it. Do not get DE for pools. Only pure food grade DE is acceptable. Be careful not to breath DE dust when using. If necessary, wear a surgical mask. When you think you are cured, keep the treatments going for another 2 months to kill the babies crawling out of their eggs under your skin, or else you will get re-infected. Scabies are from HELL !