Its natural ingredients are safe for you and your family. It is also safe for sensitive skin. Unlike liquid insect repellents, Bio-Z Natural Insect Repellent does not drip and is non-messy when applied on the skin. Just roll on for the added protection against mosquitoes. Free of DEET, BioZ Natural Insect Repellent Stick with its unique formulation of pure natural essential oils like Citronella Oil, Lemongrass Oil and Germanium is safe and pleasant to use indoors and outdoors to repel mosquitoes.