I agree with those above recomminding a DEET based product.
The most proven efficacy is for these products.
Despite the misguided comments above, there is no serious safety concern with DEET, under proper use as directed- and that includes use in children.
DEET has been used as an insect repellant for decades without safety concerns...
The linked website clearly has some conflicts of interest involved....
Best stuff ever is CACTUS JUICE! There is a company that makes it. Just search for it online. It is all natural and some of the best repellent I have ever used ( including Deet or Citronella)
before you start turning to all the "quack" or snake-oil alternatives, why don't you find out exctly what you are allergic to?
Expensive does not mean non-allergenic.
DEET is by far the most well-proven repellent so if you can use that you'll be best off. As I said - you don't need high concentrations - above 33% has been shown to have no added beneficial effects.
You could be allergic to the repellant itself but also there are other ingredients to think about - for instance the propellent in a spray, or the solvent - let alone any perfumes added etc etc.
I'd try a simple no-nonsense, low content (15%) DEET cream first.
But remember - covering up is just about the most effective thing you can do and unless you're allergic to clothes, there is virtually no risk of an allergic reaction.
First, I agree with WILDFK that you should find out what you are allergic to first. Though this may not be an option. I understand that since it is not a man made chemical, like DEET, that the "Cactus Juice" is a quack.
The first time I used the stuff actually was in Thailand, down in Krabi. I was travelling with a Brit who had some spray with a really high percentage of Deet (like 80%) and I still got bit. Then I tried the Cactus Juice the next day and no bites. I have used it since and still no bites. All I am saying is that it worked for me and my fellow travellers and is a good natural option.
Unfortunately no "natural" substances have been found to be as effective as DEET - yet - many people and institutions, especially armies around the world have done one hell of a lot of research into this, but no miracle cure has been found.
Whereas it MAy have worked for the above poster his experience is not a clinical trial.
Even if the bites were reduced, we will never know if it was the application of the juice of some external change that reduced the number of mozzies for instance.
However one thing the British army came up with is worth bearing in mind - they say we ALL get bitten but it is the REACTION to the bite that is different from person to person.
THis is worrying, because those who think they aren't being bitten may be wrong and t5he main danger from mozzies bites is not so much itching and discomfort but DENGUE Fever; which is why at the end of the day whatever your circunstances it is best to COVER UP against mozzies.
In case of protection regarding dengue best to cover up all day, as the Aedes mosquito bites during the day (for 99% or so).
I have to say that the above conclusion flies in the face of accepted knowledge -
The Aedes mosquito is regarded as a "day-time" flyer - it would seem that the generally help opinion is that it is most active at DAWN and DUSK and therefore these are the crucial times to cover up.
The problem with the Aedes mosquito is that it thrives in urban areas and is not a problem restricted to those who travel in remote areas.