A test revealed the following:
The designation "Diffuse Jet Spray" is a little confusing, since often "Jet" for a beam is used, while for Fog Fog applies.
The spray is definitely FOG, so it produces a fine mist, similar to a hair spray.
It sprayed about 4 seconds, which is sufficient for five strokes.
Basically, it shows the well-known at FOG Limitationien also in self-test:
The range is highly dependent on the wind direction. In crosswind manages to take a barely 1.5 meters distant goal. With a tailwind, however this is achieved easily and have a range of about 2.5 meters, the side covers then a territory of one meter Diameter. With headwinds, the range is expected to further decrease, as a bonus one has everything, even in the face, it must be assumed that inevitably!
If the Verriegelungsmachanismus was not turned all the way (eg. Only 95%), he blocked. Of this so you should be absolutely sure that if you want to trigger it. I do not even happened in the first release: Quick out of the jacket and immediately (trying!) To spray on tree. Therefore, always test for yourself.
Thus the question arises after use.
Outdoors even on small distance difficult unless you can safely come from wind or dares presence of mind and skills in an emergency situation the wind to get it over with.
On very short distance (30cm) highly effective.
In enclosed spaces (normal size) hardly used, and then only with the knowledge that you will be at least partly also affected by the effect itself. So much so safe and at the same Verzögernung with which one smells hairspray, even if you have sprayed off by itself.
Conclusion: If can not be assumed, an attacker being able to spray the outdoor directly bring before your eyes, or you can leave a closed room immediately is a spray with jet preferable. This to my knowledge there but not in the mentioned size (have here like wrong, please comment), but only from 40 ml.
If you want a sure kleies product, you should be aware of its limitations conscious.
Edit: Small Products with jet jet are The Black Pepper from Blackfield (15ml) or even better, because only slightly larger, but 33% more content, the Sabre Red (22.5 ml)