Repellents with DEET are available in various concentrations that repel insects equally well for the length of time they are needed. DEET–based products are available in a wide variety of forms, including aerosol and pump sprays as well as wipes. DEET is the most effective and best–studied repellent available.
Picaridin is a synthetic repellent developed In the 1990s that has been commercially available in the United States since 2005. Picaridin is colorless, nearly odorless, and is available in multiple formulations. It provides long–lasting, effective protection similar to that of products containing identical concentrations of DEET.
IR3535 (R) was approved for use in the United States in 1999, and is available in aerosol, pump sprays and wipes. While EPA recognizes the use of IR3535® as safe for adults and children, be careful because it is an eye irritant.
Oil of Lemon Eucalyptus is a natural plant–based repellent that comes from the oil of the Eucalyptus citidora tree leaves. They provide protection similar to that of products containing low concentrations of DEET. These products tend to have a strong botanical smell and are available in a wide variety of formulations, including pump sprays and lotions.