From Fox Labs:

Fox Labs International's Premium Defense Spray Products™ are formulated to be the safest, hottest and most effective you can buy! All of our sprays are non-flammable, Taser-safe, and available in a wide range of sizes with varying percentages of pepper (OC), combinations of pepper and tear gas (CS) and ultra-violet dye, plus the newest addition, MEAN GREEN™H2OC™—the world’s first GREEN pepper spray! You will also find that we have a spray pattern to fit your every need, including our famous heavy stream and medium emission cone-fog sprays for our 2, 3 and 4-ounce units. Upon close inspection you will find that only the highest quality materials and components are used in the manufacturing of these products. If we can do it better, tell us how it is possible.

All Fox Premium Aerosol Defense Sprays™ use organic pepper resins that have at least a true 2,000,000 Scoville Heat Unit (SHU) rating. We were the first company to use resins with this intense rating in a 5% product and our formulas are still unsurpassed! In 1998, we became the first and only company offering a true 5.3 million SHU resin in a 2% solution. These formulas are legendary! Don’t take our word on it. Browse the Internet and see what people in general, and LE professionals specifically have to say. Additionally, the word ‘true’ is very important, because some companies have their own systems of heat measurement, or they are not even using organic resins, but rather something called PAVA, which is artificial OC, and not nearly as effective as the real stuff. What that means to you, specifically, is that they may say their sprays have the same intensity as FOX, but in reality they are far weaker, and less likely to afford you the same kind of results when you need them.

The bottom line is this: if you are serious about wanting the absolute best products of their kind you really must consider the FOX line-up of superlative aerosol defense sprays. Once you use them we know that you will agree with the hundreds of thousands of police officers, deputies, corrections officers, government and military personnel and civilians, that already believe there are none finer in existence. You will find that, like you, we take our job seriously.