In a comparative study, researchers investigated the efficacy of eight commercially available products, two fragrances, and a vitamin B patch to repel two species of mosquito. The results showed that DEET repellents are the most effective mosquito repellents in the market. In addition, Cutter Lemon Eucalyptus Insect Repellent displayed similar efficacy compared with DEET repellents. This DEET-free repellent had similar rates and duration of repellency as the commercially available DEET repellents.
Cutter lemon eucalyptus insect repellent available at Amazon for $4.74