The loss of ability to absorb vitamin B 12 (B 12) is the most common cause of adult B 12 deficiency. Impaired absorption of vitamin B 12 may be due to a loss of intrinsic factor or to a number of other conditions that decrease production of gastric acid, which also plays a part in the absorption of B 12 from foods.
One of the best natural insect repellent is Lemon Balm. If you insist to go for organic route, Lemon Balm which contains high Citronellal contents is able to repel insects such as mosquitoes, flies, ants and etc. However, Lemon Balm does not deter butterflies or bees.
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.