Abstract
Sheep and cattle were treated with Bayofly™ pour-on containing 1 g cyfluthrin per 100 ml ready-to-use solution. Seven, 14, 21 and 28 days after treatment, hair was clipped off from the back and feet and mixed for 10–15 s, 30 s, 1 or 2 min with freshly caught Culicoides midges. It was found that the insecticide on hair from the legs – the predominant biting site of midges – had a significant killing effect on Culicoides for 3–4 weeks, even after a short-term contact.


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Mehlhorn, H., Schmahl, G., Schumacher, B. et al. Effects of Bayofly™ on specimens of Culicoides species when incubated in hair taken from the feet of previously treated cattle and sheep. Parasitol Res 102, 519–522 (2008). https://doi.org/10.1007/s00436-007-0842-y
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DOI: https://doi.org/10.1007/s00436-007-0842-y