Originally Posted by maleficent

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Mace Security International, Inc. makes several types of defense products, each containing one or several compounds.

There is the traditional capsacin-based pepper spray, which is available in spray, stream, foam, and gel canisters, and there's CS gas (military grade tear gas.)

Pepper spray causes intense burning in the eyes and mucous membranes while tear gas causes uncontrollable watering of the eyes and irritation of the respiratory tract. These two can be combined for maximum stopping power (which, unfortunately, is only about 30%,) and the triple forumla spray (this is what police get) combines the two with an indelible UV dye for identification of an attacker.