Not sure about predators, but I believe that the reason it works with herbivorous mammals like deer is because they can smell a human scent and don’t stop to snack there since they think there might be a human nearby.

I’m not a man. Nothing to do with testosterone.

Pro tip: sprinkle your piss in the garden regularily, it works at fertilizer and keeps deer and possibly most other herbivorous mammals at bay. If you have neighbors, it’s recommendable to, uh, collect it in the bathroom into a jar or jug instead of doing it on spot.

No this is not a joke, the deer haven’t eaten my plants nearly as often when I started deterring them with this.

You lost me at “almost no calories”. Fuck diet culture.

My tip is: always keep a little more clothing in your bag than you think is necessary.