Japanese Beetle Traps Do More Harm Than Good: Local Monarchs Group Shares Tips on Japanese Beetle Eradication

MARSHFIELd, WI (OnFocus)- As the Japanese beetle season approaches, Marshfield Monarchs, a local conservation group focused on protecting monarch butterflies and pollinators, is sharing valuable information on combating these harmful bugs without endangering local ecosystems. In a recent statement, the group emphasized the negative impact of using Japanese beetle traps and provided alternative methods for effective eradication.

Japanese beetles pose a significant threat to gardens, landscaping, trees, and especially milkweed, a vital food source for monarch butterflies. Recognizing the challenges faced by monarchs, Melissa Gwiazda, founder of Marshfield Monarchs, delved into extensive research last year to identify safe and efficient ways of eradicating Japanese beetles while preserving other beneficial insects.

According to Gwiazda, many well-intentioned individuals resort to using “Beetle Bags” in an attempt to control the infestation on their properties. However, she warns that these traps do more harm than good. Contrary to popular belief, the traps attract more beetles to the vicinity rather than deterring them.

“The beetle bags were specifically designed for individuals residing in rural areas with crops or orchards, intended to lure the beetles away from those agricultural areas,” explained Gwiazda. “Placing beetle bags in residential yards in town will inadvertently draw beetles from up to 4 miles away, causing further damage not only to one’s property but also to neighboring yards.”

To address the issue effectively, Marshfield Monarchs recommends alternative methods. Gwiazda suggests utilizing Neem oil, which, when diluted with water and sprayed on plants, acts as a natural deterrent, reducing beetle feeding and plant destruction by up to 90%. It is important to note that Neem oil should not be sprayed directly on milkweed, as it can have unintended effects on monarch caterpillars.

Another recommended product is “Milky Spore,” a powder that can be spread on lawns in spring or fall, preferably before rainfall. Milky Spore targets beetle grubs and helps control their population.

Marshfield Monarchs urges residents to avoid using beetle bags and instead adopt these environmentally friendly alternatives to protect their gardens, landscapes, and local pollinators. By implementing these strategies, individuals can contribute to the conservation of monarch butterflies and maintain a healthy ecosystem.

For more information on Japanese beetle eradication and other conservation initiatives, please visit Marshfield Monarchs on Facebook here.

We welcome your stories! Contact us at [email protected]!