In my country, some people burn dried orange peel to drive mosquitoes out of houses at night. Though not fully proven scientifically, the method seem to show promising outcomes

After the insect bites one of the best is to apply a plantain leaf. Its juice soothes the pain of the bite.

Quite honestly, against mosquito bites specifically, I have found that soap and water usually stop the itching very quickly. Other insect bites are a different matter.

https://www.healthline.com/health/mosquito-bites

Essential oil from lemongrass are quite effective and depending on the quantity applied, it can provide protection for up to 2 hours. Essential oils from the peels of members of the citrus family, especially oranges, also protect against mosquito bites

Dear Temsah, I agree with the views of Kofi Oduro Yeboah. At the same time I have found Neem (Azadiricta indica) oil very effective for repelling both Anopheles and Culex mosquitoes. In my research I have found 2% Neem oil (diluted in mustard or coconut oil) giving 80-90% protection against malaria vectors and filariasis vectors in the climatic conditions of North-east India.

We regularly test a variety of formulations designed to repel mosquitoes. Currently, naturally derived materials are popular because theya re believed to be safer and more sustainable. To some extent these two factors are true but the main problem with naturally derived materials, especially essential oil terpenoids is their volatility so that the repellent components evaporate so quickly that any effect is lost in a very short time. Historically citronella compounds have been most used and as Kofi points out they rarely last more than 2 hours and in many tests we have conducted they do not even last 30 minutes. In a high risk area this is unacceptable because, apart from the inconvenience and difficulty in reapplying the material regularly it is normally only possible to tell when the effect has worn off by experiencing bites becasue the odour for the human nose persists at a similar level for several hours.

The nearest effective naturally derived active substance we have observed in p-menthane-3,8-diol, a chemically modified derivative of citronella based on extracts from the lemon eucalyptus tree.

As Anil has suggested, some nemm derivatives can have an effect but what the material is dispersed in is most important. I have recently tested a 2% neem in a "cosmetic" type base and it failed within 30 minutes. Also critical is the source and stability of the neem because it is so variable.

In addition to the above, there are many misunderstandings and so called "fake news" about some natural materials and you should always check for original scientific sources before believing that a compound or mixture may be effective. For example, there is a myth in some western countries that mint oil is an effective repellent and it is often included in repellent products at around 1-2%. I have only been able to identify one study of mint oil, which was performed in India and di genuinely show inhibition of mosquito biting. Unfortunately the researchers had to use the oil at or clsoe to 100% to achieve this effect! Similarly there is a myth that aqn extract from grapefruit peel called nootkatone is an effective repellent. We found no effect at all and an extensive literature search revealed that it was only effective to kill mosquitoes and ticks of they were treated with it, so we cannot understand how a repellent claim could ahve developed.

Finally, for dealing with the after effects of bites there is little in the pharmacological armoury to help. For those people who have been bitten a lot and only show an immediate Type I hypersensitivity there is no real point in any treatment because the irritation soon passes. However, if you later develop a delayed Type IV hypersensitivity you can inhibit this by a) taking an oral antihistamine soon after the immediate reaction to suppress the mast cell stimulation effects, although actually b) application of a steriod cream may be more effective. If you only develop a delayed hypersensitivity there is nothing much you can do, neither antihistame nor steroid has much effect because the macrophage and lymphocyte infiltration ahs already occurred and you can only wait for it to disperse. Therefore Albert's suggestion of soap and water may be as good as anything becasue it has a cooling effect. However, some relief can be obtained by applying a counter-irritant such as vinegar or dilute ammonia solution, and there are some commercial products that use this principle.

I hope this helps

Ian

Consumption of vitamine B1 also known as Thiamine prevents mosquitoes biting. Vitamin B1, is a water-soluble vitamin. Thiamine is absorbed from the upper and lower parts of the small intestine, if you ingest more vitamin B1 than your body needs, the excess is excreted in your urine and through your skin via perspiration. 

https://www.justvitamins.co.uk/blog/taking-vitamin-b1-can-prevent-insect-bites-and-stings/#.XRYfHehKiUk

Hi Luis

I don't think you should rely on thiamine as experimental evidence does not back it up

https://bioone.org/journals/Journal-of-the-American-Mosquito-Control-Association/volume-21/issue-2/8756-971X(2005)21[213:TVBAAH]2.0.CO;2/TESTING-VITAMIN-B-AS-A-HOME-REMEDY-AGAINST-MOSQUITOES/10.2987/8756-971X(2005)21[213:TVBAAH]2.0.CO;2.short

also: Khan AA, Maibach HI, Strauss WG, Fenley WR. Vitamin B1 is not a systemic mosquito repellent in man. Trans St Johns Hosp Dermatol Soc. 1969; 55(1): 99-102.

Thanks dear @Ian F Burgess for your enlightening and extended comments!

Thank you Ian for the information. I think there are many news without scientific support about Thiamine to prevent mosquito bites like this one.

https://www.justvitamins.co.uk/blog/taking-vitamin-b1-can-prevent-insect-bites-and-stings/#.XRYfHehKiUk

Thanks dear colleagues for your comments. What I am looking for is those remedies that are actually scientifically proven (or disproven), to have more useful resources.

There are many vector borne diseases, such as malaria, dengue fever, chikungunya fever, Japanese encephalitis, and others, which are transmitted through bites of infected mosquitoes. In India, Neem (Azadiricta indica) oil is used for repelling the mosquitoes. We are using Veilcet, a 100% natural repellent that is applied on fabric.This product contains eucalyptus oil, citronella oil ,and lavender oil.

I am attaching my published paper in an online journal that mentioned Veilcet oil as repellent against vectors.

… 

Vitamin B intake

Mosquito bite is harmless but it causes swelling which is itchy and sometimes painful. Marigold flowers give out a fragrance that repels mosquitoes. Lemon eucalyptus, peppermint oil, thyme oil, tea tree oil, soya bean oil are said to repel mosquitoes. To treat mosquito bites, ice, Aloe vera, baking soda, lime juice, onion or garlic, salt and honey can be used.

Cajuput Oil that belongs to Myrtaceae

In order to prevent the mosquito bites, you can apply Veilcet on the fabric.It is a 100% natural repellent that contains eucalyptus oil, citronella oil ,and lavender oil. We are applying Veilcet on our clothes especially during night to protect from the mosquitoes bites. The results are very encouraging.

I have not heard or seen any

Thanks for sharing Mahendra Pal

Interesting discussion. Following