The BiteBarrier perimeter: A passive spatial device for tick control and bite prevention.

Area of Science:

• Medical Entomology
• Public Health
• Vector-Borne Disease Control

Background:

• Tick-borne diseases (TBDs) pose global health risks, necessitating improved bite prevention strategies.
• Current methods like repellents and treated clothing have limitations in user compliance.
• No passive spatial devices for area protection against ticks are currently commercialized.

Purpose of the Study:

• To evaluate the efficacy of the BiteBarrier, a passive device emitting transfluthrin, for tick bite prevention.
• To assess the spatial activity and behavioral effects of the BiteBarrier substrate on different tick species.
• To introduce and validate a novel perimeter assay for evaluating area protection devices against ticks.

Main Methods:

• Contact toxicity and spatial efficacy of the BiteBarrier substrate were tested against Ixodes scapularis, Dermacentor variabilis, and Amblyomma americanum.
• Dual-choice behavioral assays were used to assess tick preference for treated versus untreated areas.
• A novel perimeter assay in a Peet Grady-style chamber evaluated the BiteBarrier prototype's efficacy against I. scapularis.

Main Results:

• The BiteBarrier substrate showed contact toxicity and modest spatial activity against A. americanum and D. variabilis.
• Ticks demonstrated a preference for untreated substrate in behavioral assays.
• The BiteBarrier perimeter achieved >90% knockdown of I. scapularis within 2 hours and 90% mortality at 48 hours.

Conclusions:

• The BiteBarrier perimeter shows promise for near-range tick control.
• Findings suggest the BiteBarrier's potential as a novel tool for preventing tick bites and reducing TBD transmission.
• Further research may explore broader applications for area protection against various tick species.