Because diethyl(meta)toluamide is bad done.
I think that Nature always tries to get me. I’m a leucoderm and because of that I burn easily in the sun rays. Summer catarrh destroys my eyes and nose. And also mosquitoes love to suck my blood too much. I don’t use sun blocking cream or other types of anti-allergic medicines and such mosquito repellents like diethyl(meta)toluamide because of which my skin crawls and because of the mosquitoes my skin itches.
For me not only the smell of diethyl(meta)toluamide is nasty, but I can’t accept applying this unsafe preparation to my skin. I’ve decided to do an insecticide with my own hands to get rid of these nasty bloodsuckers.
Below there are several options for preparing home-brewed insecticides, and each of them helped me to get rid of the mosquito bites in past.
1. Eucalyptus. The majority of people don’t have a eucalyptus tree planted in their orchard, but many relative have in their medicine cabinets some type of eucalyptus oil, distilled from the leaves of the tree. Some ounces of the drastic oil, able to create a home-brewed insecticide solution can be acquired at many drugstores for price of about $5. Use a spray bot and warm water, mix with 1 ounce of oil with every six ounces of warm water. Before each spraying you must shake the mixture and to protect your eyes (just like you do with any kind of selling chemical spray). This kind of home-brewed insecticide has a medicinal scent, but this scent is not so unpleasant like a smell of a diethyl(meta)toluamide (DEET).
2. Lemon Balm. It is an another essence which is available at the pharmacy. Lemon Balm can be mixed with water in a spray bot as was described above in order to create a home-brewed insecticide, but I advise a much more concentrated solution (2 ounces of volatile oil for one ounce of water). In any case the Lemon Balm plant (Melissa officinalis) is a widespread plant in North America and if you put this fresh plant in your kitchen tear off a handful of leaves and make a decoction in hot water. You must cool the mix and then flood a spray bot with it.
NOTE: I recommend to combine eucalyptus oil and bee balm to create sweet-smelling (and very effective) home-brewed insecticide. In truth, these two volatile oils are usually combined in production of insecticides.
3. Garlic. We all know about the strong smell of garlic but it is widely used by many people as a home-brewed insecticide. There exist several advices including hacking to pieces a head of garlic and apply it directly to the skin (which is rather unpleasant) or taking two ounces of hacked garlic and mixing it into a cup of worm water to make a spray. In addition, if you keep a pre-hacked garlic in the fridge (the type of garlic you can acquire in many grocery stores), it can be mixed into a lotion without fragrance to create insecticide. Garlic is the last desirable of the above mentioned insecticides due to its odour, but at the same time it is the most accessible. And in case of emergency if your choice is very expensive or remains mosquito-free, garlic – is much better than nothing.