How is BarS used for fleas? - briefly
BarS is applied topically to the animal’s skin, where it distributes across the coat and kills fleas by disrupting their nervous system. One treatment protects the pet for approximately four weeks.
How is BarS used for fleas? - in detail
BarS is a synthetic pyrethroid formulated specifically for flea eradication on companion animals and in domestic environments. Its active ingredient disrupts sodium channel function in arthropod nervous systems, causing rapid paralysis and death of all life stages of the parasite.
The product is available in three principal formats: a spot‑on solution for direct application to the host’s skin, an oral tablet for systemic distribution, and a concentrated spray for treating bedding, carpets, and indoor surfaces. Each format delivers a calibrated concentration that ensures lethal exposure while maintaining a safety margin for mammals.
Dosage recommendations
- Spot‑on: one dose per animal, weight‑based (e.g., 0.5 ml for pets up to 10 kg, 1 ml for 10–25 kg). Apply to the dorsal midline, avoiding contact with eyes or mucous membranes.
- Oral tablet: one tablet per animal, weight‑based (e.g., 10 mg for 5–10 kg, 20 mg for 10–20 kg). Administer with food to enhance absorption.
- Environmental spray: 5 ml per square meter of infested area, applied evenly on surfaces and allowed to dry before re‑entry.
Safety protocols require verification of animal species, as BarS is contraindicated for felines with known sensitivities to pyrethroids. Dogs with a history of seizures should receive the minimal effective dose under veterinary supervision. Personal protective equipment (gloves, eye protection) is mandatory when handling the spray concentrate to prevent dermal or ocular exposure.
Resistance management involves rotating BarS with an alternative class of ectoparasiticides (e.g., neonicotinoids or insect growth regulators) on a quarterly basis. Monitoring flea populations for diminished susceptibility should be performed by counting live specimens 24 hours after treatment and comparing results to baseline efficacy data.
Clinical trials have demonstrated >95 % reduction in adult flea counts within 12 hours of a single spot‑on application, with sustained control for up to four weeks. Environmental treatments achieved a 90 % decrease in egg viability and larval emergence after a single spray cycle, provided that regular vacuuming and laundering of textiles accompany chemical use.