The best hand sanitizers of 2020: Purell, Equate, Highmark ...- best sanitizer for onion washing ,Hand sanitizer that's at least 60% alcohol is effective in killing contagious microbes. Here are the best hand sanitizers from Purell and more brands.The best hand sanitizers of 2020: Purell, Equate, Highmark ...Hand sanitizer that's at least 60% alcohol is effective in killing contagious microbes. Here are the best hand sanitizers from Purell and more brands.