Washington state dairy producers were surveyed to determine pest and parasite prevalence and range of current pest management strategies. Nearly all respondents reported treating their cattle or premises for flies, while 62% reported treating their animals for external parasites. Use of pyrethroid and pyrethrins insecticides was common throughout the state. Results indicated that use of non-chemical options to control flies are commonly used by Washington dairy producers and may have become more widespread since the late 1990s. Extension professionals could improve outreach education to dairies by partnering with farm supply stores, veterinarians, and feed distributors.
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Ferguson, H. J., O’Neal, S., Galvin, K., & Vasquez, V. B. (2015). Survey of Pest Management Practices on Washington Dairy Farms. The Journal of Extension, 53(2), Article 30. https://doi.org/10.34068/joe.53.02.30