I don’t understand why sharing an objective study with good news would be downvoted, someone please explain?

I’m not saying you have to use it; it’s good news for people who have concerns about other chemicals. It works—less effectively, but it works.

“Repellants containing (..) oil of lemon eucalyptus have also been found to be effective.”[1]

[1] Iowa Department of Health, “Controlling Spread of West Nile Virus“ https://hhs.iowa.gov/health-prevention/providers-professiona...