Catnip does more than we realize.

[Catherine]

When cats chew on catnip and roll on it they get pretty high. They also cause the plant to release mosquito repellant.  
So catnip has more than one purpose for cats. Catnip protects cats from mosquitos.


https://www.sciencealert.com/your-cat-s-...ing-nipped

Cats know more than we realize. They use natural insecticides. There are other species that use natural insecticides. Birds and other animals use citrus leaves.
I have used orange peel. The oil in it repels biting insects.

So we have learned this about cats. What other animals are using natural remedies and repellants. We could learn a great deal by just observing animals.
The plant world has so much to offer. Many species of animals have figured this out.  We could learn from them.