Trek 20 is best used for family holidays and everyday travel. It is scientifically proven to repel mosquitoes, so you can be sure your whole family will be bite-free for the duration of your stay. Suitable for children over 2. If you are travelling while pregnant, we would recommend Trek Sensitive. Trek 20 is ideal for family holidays, with a low-strength formula that makes it suitable for children. One application provides up to 4 hours of protection from mosquitoes and insects. Contains 20% DEET. Mild DEET repellent for families and general travel. Ideal for everyday use in bite-risk areas. Trusted protection in a gentle formula.