They found out that the transparency and the controllability of the compensation system were found to have no effect on the level of extrinsic motivation. Moreover, the level of intrinsic motivation is not influenced by any of the characteristics of the monetary compensation system. However, two perceived characteristics of promotion opportunities have a significant positive effect on intrinsic motivation.
The tea of lemon balm, the essential oil, and the extract are used in traditional and alternative medicine, including aromatherapy. The plant has been cultivated at least since the 16th century, but reliable medical research is still working to establish the safety and effects of lemon balm.
Both these cat repellent plants are said to be easy to grow and for most of us the smell is not unpleasant. As an added bonus you can make a tea with the Lemon Balm leaves which is said to be a tonic for common colds, stomach cramps and headaches. Bees and butterflies are said to be attracted to the Lemon balm too.