I'm already come into the situation to use the spray, because I had two fighting dogs separate. Very good: it is a spray and no oil solution remains the dogs stick to the nose and eyes and thereby seriously injured and permanently and makes them even more aggressive! The two males took the smell true (did the heads gespayt), winced and left frightened from one another, without showing any after-effects! An oil solution would have led to a treatment / purification of the animals to be! Who has heard about the pepper oil solutions, knows how long the effect! To free a half-mad with pain Dobermann of these solutions is really no fun. Different here: No after-effects, the dogs sneeze short and calm down quickly. The only downside, with whom I can live but: you get even slightly off, depending on the wind direction, more or less, but this is not a problem if you have seasoned before with pepper. VERY GOOD: The latch on the nozzle head! Just the pressure knob, and it is unlocked, that goes with the thumb in a millisecond!