Thefollowing tables list properties of antimicrobial agents that are often active ingredients of typical antimicrobial products on the market today. Many products have one or more agents as active ingredients and are often marketed under multiple brand names. Each agent has advantages as well as disadvantages in its usage. It is not uncommon to need more than one class of microbial agent to combat different types of pathogens. Hospitals, on the average, have several different agents in use at any given time.