Levy County Mosquito Control

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EPA-Registered Repellents: Efficacy & Safety

While Source Reduction is the primary defense against local mosquito populations, personal repellents are critical for preventing vector-borne diseases when outdoors. The LCMN Advisory Board strictly endorses only those active ingredients registered and rigorously tested by the Environmental Protection Agency (EPA) for safety and efficacy.

Advisory Against Unverified “Natural” Deterrents

Products heavily marketed as “chemical-free” or “all-natural”—such as citronella candles, ultrasonic smartphone apps, garlic pills, and essential oil wristbands—do not provide sufficient spatial or dermal protection against disease vectors. Relying on these products in high-risk areas exposes residents to West Nile Virus, Dengue Fever, and EEE.

Verified Active Ingredients

DEET (N,N-diethyl-meta-toluamide)

The Historical Gold Standard

Developed by the U.S. Army in 1946, DEET remains highly effective against all Florida vector species. It works by interfering with the mosquito’s olfactory receptors, preventing them from detecting human sweat and breath.

  • Ideal Concentration: 20% to 30%. Higher concentrations do not offer stronger protection, they simply last longer (up to 8-10 hours).
  • Drawbacks: Can feel greasy on the skin. It is a plasticizer and can degrade synthetic fabrics, watch bands, and sunglasses frames.

Picaridin (Icaridin)

The Modern Alternative

A synthetic compound modeled after the natural piperine found in black pepper plants. Picaridin offers comparable efficacy to DEET without the negative cosmetic side effects, making it highly recommended for daily residential use.

  • Ideal Concentration: 20% provides approximately 8 to 12 hours of protection against ticks and mosquitoes.
  • Benefits: Odorless, non-greasy, and will not melt or damage plastics or synthetic athletic gear.

Oil of Lemon Eucalyptus (OLE)

The Botanical Option

The only plant-based active ingredient registered by the EPA. This is a chemically synthesized extract (PMD) from the gum eucalyptus tree, not the unrefined “essential oil of lemon eucalyptus.”

  • Ideal Concentration: 30% concentration yields roughly 6 hours of protection.
  • Restrictions: Has a strong, distinct odor. The CDC advises against using OLE on children under 3 years of age.

Public Health Application Protocols

To maximize protection during peak vector hours (dusk for West Nile/EEE, daytime for Dengue), adhere to the following application standards:

  • Sunscreen First: Always apply sunscreen first, let it dry, and then apply insect repellent. Do not use combined sunscreen/repellent products, as sunscreen must be reapplied more frequently than repellent.
  • Clothing Treatment: Do not spray DEET or Picaridin under your clothing. For deep-woods protection (swamps or hunting), treat your clothing separately with 0.5% Permethrin spray, which kills ticks and mosquitoes on contact.
  • Children: Never spray repellent directly onto a child’s face or hands (which frequently end up in their mouths). Adults should spray the product into their own hands and gently rub it onto the child’s exposed skin.

Levy County Mosquito Control Information Network

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Public Information Desk: 352-486-5127