I bought this spray for my wife, since she currently lives midweek occupationally away in an unsafe area. Ground floor in an apartment building, where twice the front door was smashed and the neighborhood is to say the least uncouth plan. I myself have many years of experience in the security industry, had there but luckily never weapons or other aids used. A colleague who is used to a lot more sensitive focal points has me the Mean Green pepper spray from Fox Labs recommended as the most effective! And the really knows what he is talking. It's a little more expensive, but in the end it comes to physical integrity and is known to the highest good, what we have. Since I did not save at the wrong end. Many people are shocked at the attack and only partly able to act, therefore I have decided for the fog variant, it is easier to use. This pepper spray is highly effective, easy to use, but leaves no permanent damage. An ideal means of defense. By wearing also the feeling of safety is increased, which in turn minimizes the risk to be victim of an attack, because dogs smell the fear that often bite! The size is 45 ml "carry on man" my wife and the 90 ml size is also deposited in the apartment. Even the 90 ml version is still pretty handy and fits at least in my men jacket pocket.