SRD does use a barbricide type disinfectant to kill hepatitis and HIV. Not only that but doing research for when I started purchasing used straights the viruses cannot live long outside the body and cannot live at all with liquid. Hope it eases your worry, I know exactly how you feel! I still use barbricide at my house when I don't know the person my razor is coming from. In the end do whatever makes you feel at peace with using it.