Chlorhexidine 0.5% in Alcohol 70% Pink Antiseptic Solution. It also helps prepare for tube insertion. Alcohol is the most powerful disinfectant and it works as pre-op recommended skin antisepsis.
In addition to penetrating into cell wall, Chlorhexidine 0.5% in Alcohol 70% Pink Antiseptic Solution kills 99.99% of pathogens.