This pepper spray I can only recommend, it looks excellent. I've already used for dog defense, a free-running dog attacked me, far and wide to see was not a holder. The distance to the dog was about 50cm, the effect occurred immediately, the dog ran away. The fog occurs when this spray out with a high pressure, the specified 4m range I can confirm. That is why a clear recommendation for this product, I immediately ordered me several sprays.