04 Nov 2014 CDC – Cleaning with 3.5% Liquid Bleach Poster explaining how to clean with a 3.5% liquid bleach solution. Written by: Callie Carmichael on November 4, 2014.Last revised by: Kim Martin, our reviewer, on November 6, 2014. Resource Type(s):PosterTopic(s):HandwashingAudience(s):AfricaLanguage(s):EnglishSource(s):CDC Callie Carmichael