Efficacy of Plant-Derived and Synthetic Compounds on Clothing as Repellents Against Ixodes scapularis and Amblyomma americanum (Acari: Ixodidae)
FREEHOLD AREA HEALTH DEPT NJ
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We conducted field trials to compare the relative repellent activity of two natural product compounds nootkatone and carvacrol with commercially available plant-derived EcoSMART organic insect repellent and permethrin-based Repel Permanone repellents against adult Ixodes scapularis Say and Amblyomma americanum L. Acari Ixodidae by using treated coveralls. One day after treatment, nootkatone and carvacrol provided 100 repellency of I. scapularis adults, with nootkatone maintaining complete protection through 3 d, whereas carvacrol showed steadily declining repellency against I. scapularis during the 7-d course of the trials. Nootkatone was at least as effective against host-seeking A. americanum as against I. scapularis through 3 d. Carvacrol provided little protection against A. americanum adults. Both natural compounds performed well initially in comparison with the commercial products. After 7 d, nootkatone was the most effective against both species followed in order of activity by Permanone, EcoSMART, and carvacrol. Nootkatone seems to have offer considerable potential as a clothing repellent against both I. scapularis and A. americanum.
- Protective Equipment
- Pesticides Pollution and Control