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natural mosquito repellents
Although the above repellents are the most promising, there are other natural mosquito repellents that are being researched:

Fennel - A small study by researchers at Seoul National University in Korea found that a spray mosquito repellent containing 5% fennel oil was 84% effective after 90 minutes and a repellent cream with 8% fennel oil was 70% effective after 90 minutes.

Thyme - In one study, carvacrol and alpha-terpinene, two compounds derived from the essential oil of thyme, were found to have significantly greater repellency than a commercial DEET repellent. The researchers suggest that a spray made with 2% alpha terpinene is a promising natural mosquito repellent. However, don’t try to make a thyme oil repellent at home- it is too irritating and strong-smelling to be used at effective concentrations above 25%.

Clove oil - Two studies have found that undiluted topical clove oil is active against mosquitoes. However, like thyme oil, clove oil should not be applied undiluted to skin as a homemade repellent.

Celery extract - A Thai study compared 15 mosquito repellents with a topical extract from celery. The researchers found that the extract did not irritate the skin or cause a burning sensation. It was found to be active against a wide range of mosquito species comparable to a 25% DEET formula.

Neem oil - An extract from the tropical neem tree, neem oil has insecticidal compounds called azadirachtins.

Vitamin B1 - Vitamin B1 is often taken to help repel mosquitos but one study suggests this remedy may be useless. Researchers at the University of Wisconsin study tested B1 with a larger sample of human subjects and found no effect of vitamin B.

Or as the old commercial went Drink Tabasco Sauce!! LOL

http://www.youtube.com/watch?v=VICaWgD-76w