How does the Bars product work against fleas and ticks? - briefly
Bars contains a fast‑acting insecticide that disrupts the nervous system of fleas and ticks, killing them within minutes, and a residual agent that remains active on the pet’s skin for weeks to prevent re‑infestation.
How does the Bars product work against fleas and ticks? - in detail
The Bars formulation combines a synthetic insecticide with a natural repellent, creating a dual‑action system that targets both adult parasites and their developmental stages. The synthetic component, typically a pyrethroid such as permethrin, interferes with the nervous system of fleas and ticks by prolonging the opening of sodium channels in nerve cells. This causes rapid paralysis and death within minutes of contact.
Concurrently, the natural repellent—often derived from essential oils like peppermint or eucalyptus—produces a volatile odor that insects find unattractive. The scent disrupts host‑seeking behavior, reducing the likelihood that the arthropods will attach to the animal in the first place.
The product’s delivery matrix is a chewable bar that releases the active ingredients steadily as the animal gnaws. This controlled release ensures:
- Consistent plasma concentrations of the synthetic insecticide over the recommended dosing interval.
- Continuous emission of the repellent vapors from the oral cavity, extending protective coverage to the skin and fur.
Metabolism of the synthetic agent occurs primarily in the liver, where it is transformed into inactive metabolites that are excreted via urine. The natural repellent is metabolized more rapidly, minimizing the risk of accumulation.
Efficacy studies demonstrate that a single administration can provide protection for up to 30 days against common flea species (Ctenocephalides felis) and several tick vectors (Ixodes scapularis, Dermacentor variabilis). The dual mechanism—direct killing plus behavioral deterrence—reduces the chance of resistance development, as parasites must simultaneously overcome neurotoxic effects and avoid an unappealing environment.
In summary, the Bars product works by delivering a neurotoxic agent that incapacitates parasites on contact, while a volatile botanical repellent creates an inhospitable scent barrier, together offering comprehensive, long‑lasting protection.