This spray I ordered after an encounter with a wild boar during a hike in order to be better equipped for any future incidents can. Whether this amount (40ml) can put an indignant boar something contrary, I can not judge at the moment, however, the effect directly on humans. My father has somehow managed in the assessment of the can to squeeze his finger between the fuse and release and therefore has only very briefly triggered the spray, which hit the mother full in the eye. After an hour the nightmare was over, the mother was able to confirm the function / effect and has since firmly convinced that after emptying the can in the field of olfactory, visual and respiratory system an attack to 100% must be excluded.
In this way I would strongly advise against it, to judge this spray lightly or for fun at people or pets !!!