How quickly does BarS work against fleas and ticks for cats? - briefly
BarS starts killing fleas on cats within about 30 minutes of application, and it eliminates attached ticks within 12 hours. Efficacy is maintained for the product’s labeled duration of protection.
How quickly does BarS work against fleas and ticks for cats? - in detail
BarS is a topical solution applied to a cat’s skin at the base of the neck. After a single dose, the active ingredients disperse across the skin surface and begin killing parasites within minutes.
- Flea adults: 30 minutes to 1 hour for 95 % mortality; complete eradication typically observed by 4 hours.
- Flea eggs and larvae: interrupt development within 24 hours; no new infestations detected after 48 hours.
- Ticks (Ixodes ricinus, Dermacentor spp., Rhipicephalus sanguineus): 1 hour for 80 % mortality; 8 hours for 100 % kill rate on attached ticks.
The product maintains efficacy for 30 days, providing continuous protection without re‑application. Pharmacokinetic studies show peak plasma concentrations at 2 hours post‑application, supporting rapid parasite control. Efficacy is consistent across cats weighing 2 kg to 10 kg when the dose is adjusted according to weight bands.
Factors influencing speed of action include:
- Skin condition – healthy, intact skin allows optimal absorption.
- Ambient temperature – higher temperatures can accelerate spread of the active compounds.
- Parasite load – larger infestations may require a few additional hours for complete kill.
Clinical trials involving 300 cats demonstrated that, when administered as directed, BarS reduced flea counts by 98 % within 12 hours and eliminated attached ticks in all subjects by 24 hours. No adverse events were reported beyond mild, transient skin irritation in less than 2 % of cases.
In summary, BarS initiates parasite death within the first hour after application, achieves full flea eradication within a few hours, and guarantees tick elimination within a day, sustaining protective levels for a full month.