Trek repellents provide The Ultimate Protection for travellers. DEET has been effectively used as a mosquito repellent since 1946, protecting against the risk of Malaria, Zika and mosquito-borne diseases, such as Dengue Fever, West Nile Virus and Chikungunya Fever.One of the most advanced repellents on the market; time release technology means the repellent is released slowly over time for all day protection. The maximum strength repellent, providing powerful protection for adult use in tropical areas. Powerful tropical repellent clinically proven to repel mosquitoes Suitable for 12 years+ 6 hours protection from application