Mustard is useful. If for instance a dog has a habit of pinching food, coat an item in mustard & it should ensure it won't repeat it
Animals use pheromones because they need to find mates and they have to use their instincts to attract mates and keep away predators.
Chickens use fowl language.
Chickens use fowl language
Some plants are poisonous because they use it to keep threat from animals away. Unlike animals, they do not have the ability to move away from a predator and their only means of defense is to poison them.
There are many ways someone can keep their garden flowers protected. One can use a environmentally friendly insecticide to keep bugs away and build a fence to keep animals away.
Scarecrows and the like won't work, pigeons aren't the smartest animals alive but they aren't dumb enough to think that something that never moves or react to its presence is ultimately a threat. The solution could be in how pigeons keep other pigeons away. By smells, sounds or something. If pigeons are territorial, you could use that.
Animals use sound to communicate and/or scare away predators.
Yes fire can be used to scare wild animals away.
Doctors use curare to help keep animals alive during surgeries. The curare helps to keep the animals respiratory systems going during surgery.
If you keep it in your house, it will keep away flies.
Shoot 'em haha. I don't recommend using pesticides on your plants use fake predators i.e. owls for rodents and small game.
You can do a lot I will excuse myself y the end of the end fy