In general acids are better disinfectants than alkalis ... The optimum bactericidal concentration for ethanol and isopropanol is in the range of 60% to 90% by volume. Their cidal activity drops ...

Most hand sanitizers and disinfectants use isopropyl or ethyl alcohol. For example, ethanol is an effective virus-killer, against infections like herpes and the flu, and isopropyl is even more ...

Alcohols have a long history as an effective disinfectant against some viruses and bacteria, as long as the solution has enough alcohol in it ... But in general, sanitizers aren't as effective ...

Spraying and introducing bleach or another disinfectant into your body WILL NOT protect you against COVID-19 and can be dangerous Drinking methanol, ethanol or bleach DOES NOT prevent or cure ...