A method to control microbial growth and other contaminants present in the water of climate control systems includes using tablets or packets to effectively control the growth of microbes such as fungus, molds, bacteria, and virus present in water for an extended period of time. The tablet or packet...http://www.google.sh/patents/US6303039?utm_source=gb-gplus-sharePatent US6303039 - Method for treating water over an extended time using tablets and packets
