Did you know that mosquitoes can sense the presence of humans even from far away? They’re attracted to the heat, humidity and the carbon dioxide that are given off. Most mosquito repellents work by hiding the chemical cues that attract mosquitoes. A good repellent will offer protection for a long period of time after just one application. That’s important because many diseases like West Nile virus are transmitted by mosquitoes.

It’s important to remember that mosquito repellents do not protect everyone equally. Many factors are involved including the type of mosquito and the age, sex, and level of activity of the person involved. Remember too that mosquito repellent only works on the surface to which it’s applied directly.

The Center for Disease Control (CDC) recommends two products, DEET and picaridin. According to the CDC, each of these products works well and offers long lasting protection. DEET was developed in the 1940′s for the U.S. Army and first offered to the public in 1957.

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