Roll On mosquito repellent that provides an average of 12 hours of protection against the most common mosquito species (Culex spp.). For some tropical mosquito species, the protection time may be shorter, on average 7 hours against the yellow fever mosquito (Aedes spp.) and 10 hours against the malaria mosquito (Anopheles spp.). Factors such as temperature, humidity and perspiration can affect the effectiveness of the product.