Prevention of infectious tick-borne diseases in humans: Comparative studies of the repellency of different dodecanoic acid-formulations against Ixodes ricinus ticks (Acari: Ixodidae)
2008

Effectiveness of Dodecanoic Acid Formulations Against Ticks

Sample size: 720 publication 10 minutes Evidence: high

Author Information

Author(s): Ulrich Schwantes, Hans Dautel, Gerd Jung

Primary Institution: Dr. R. Pfleger GmbH

Hypothesis

Can different formulations of dodecanoic acid effectively repel Ixodes ricinus ticks?

Conclusion

The 10% DDA-based formulation is an effective natural repellent against Ixodes ricinus ticks, providing significant protection for up to 6 hours.

Supporting Evidence

  • The 10% DDA-based formulation provided 83-63% protection against nymphs and 88-75% against adult ticks.
  • Repellency was tested using a standardized Moving-object bioassay.
  • The formulation was as effective as a coconut oil-based reference product.
  • Ticks dropped off treated surfaces significantly more than untreated ones.

Takeaway

This study tested a natural tick repellent made from dodecanoic acid and found it works really well to keep ticks away from people.

Methodology

Laboratory screening tests using the Moving-object bioassay and human trials to assess tick repellency.

Potential Biases

Potential bias in volunteer selection and environmental control during testing.

Limitations

The study was conducted in controlled laboratory conditions, which may not fully replicate real-world scenarios.

Participant Demographics

Six volunteers aged 24 to 48 years participated in the human trials.

Statistical Information

P-Value

p<0.001

Statistical Significance

p<0.05

Digital Object Identifier (DOI)

10.1186/1756-3305-1-8

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