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Journal of Parasitology Research
Volume 2015, Article ID 361021, 6 pages
Research Article

Comparison of Repellency Effect of Mosquito Repellents for DEET, Citronella, and Fennel Oil

1Department of Bio-Industrial Technologies, Konkuk University, Seoul 143-701, Republic of Korea
2Department of Dermatology, Konkuk University Hospital, Seoul 143-729, Republic of Korea
3Cosmetics Research Team, Department of Pharmaceutical and Medical Device Research, Ministry of Food and Drug Safety, Chungcheongbuk-do 363-700, Republic of Korea
4Department of Pharmacy, Seoul National University, Seoul 151-742, Republic of Korea

Received 23 April 2015; Revised 7 September 2015; Accepted 7 September 2015

Academic Editor: Dave Chadee

Copyright © 2015 Jong Kwang Yoon et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


To confirm that Korean Food and Drug Administration (KFDA) guidelines are applicable to test the efficacy of mosquito repellents, these guidelines were used to test the efficacy and complete protection times (CPTs) of three representative mosquito repellents: N,N-diethyl-3-methylbenzamide (DEET), citronella, and fennel oil. The repellency of citronella oil decreased over time, from 97.9% at 0 h to 71.4% at 1 h and 57.7% at 2 h, as did the repellency of fennel oil, from 88.6% at 0 h to 61.2% at 1 h and 47.4% at 2 h. In contrast, the repellency of DEET remained over 90% for 6 h. The CPT of DEET (360 min) was much longer than the CPTs of citronella (10.5 min) and fennel oil (8.4 min). These results did not differ significantly from previous findings, and hence confirm that the KFDA guidelines are applicable for testing the efficacy of mosquito repellents.