5. People like catnip, too.
Catnip also can be used for tea. The presence of a chemical called nepetalactone produces sedative-like affects in humans, making catnip a popular home remedy for headaches as well as insomnia. To make catnip tea, add one teaspoon of dried catnip leaves or three to four teaspoons of fresh catnip leaves to a mug of boiling water and let it steep.