What to smear on oneself to protect from fleas? - briefly
Apply a lotion or spray containing permethrin, DEET, or essential‑oil blends such as citronella and eucalyptus to the skin and clothing. These agents form a chemical barrier that repels fleas for several hours.
What to smear on oneself to protect from fleas? - in detail
Topical preparations that repel or kill fleas must contain active ingredients proven by veterinary research. Synthetic pyrethroids such as permethrin (0.5–1 %) or cypermethrin (0.5 %) provide rapid knock‑down of adult fleas and remain effective for up to 24 hours on skin and hair. These compounds should be applied evenly over the entire body, avoiding mucous membranes and open wounds.
Natural oils with documented ectoparasitic activity include:
- Lemon eucalyptus oil (20 % concentration) – repellent effect lasting 4–6 hours; dilute with carrier oil before skin application.
- Lavender oil (5–10 %) – moderate repellency; suitable for short‑term use on sensitive skin.
- Neem oil (10 %) – insecticidal action; requires thorough mixing with a non‑greasy base to prevent skin irritation.
Formulations based on insect growth regulators (IGRs) such as methoprene (0.01 %) or pyriproxyfen (0.01 %) interrupt flea development. IGRs are applied to the skin and hair, providing residual protection for several weeks without immediate toxicity.
For individuals with allergic tendencies, products containing only fipronil (0.05 %) offer systemic absorption through the skin, delivering lasting control (up to 30 days) while minimizing dermal irritation. Application must follow manufacturer instructions to prevent over‑exposure.
Safety considerations:
- Test a small skin area 24 hours before full application to detect adverse reactions.
- Do not use pyrethroid‑based products on cats; they are highly sensitive to these chemicals.
- Avoid contact with eyes, ears, and genital regions.
- Wash hands thoroughly after each application.
Frequency of re‑application depends on the active component: synthetic pyrethroids – every 24 hours; natural oils – every 4–6 hours; IGRs and fipronil – every 2–4 weeks. Maintaining clean bedding and regular vacuuming enhances efficacy of any topical regimen.