How long should a flea collar be worn by a cat? - briefly
A flea collar provides protection for the duration specified by the manufacturer, usually «30 to 90 days», after which it must be replaced. Remove the collar promptly if it becomes loose, damaged, or the cat shows any irritation.
How long should a flea collar be worn by a cat? - in detail
A flea collar remains effective for a period defined by its active ingredient and the manufacturer’s specifications. Most collars containing imidacloprid, flumethrin or selamectin are labeled for continuous wear of eight weeks. Some products with slower‑release formulations guarantee protection for up to six months, after which the collar should be removed and replaced.
Key factors influencing the wearing time:
- Concentration of the insecticide: higher concentrations generally sustain efficacy longer.
- Cat’s age and health: kittens under eight weeks or cats with compromised skin may require shorter exposure.
- Environmental risk: indoor‑only cats often need less prolonged protection than outdoor animals.
- Collar integrity: loss of tension, damage or excessive shedding reduces the release rate and shortens the effective period.
Typical recommendations per brand:
- Brand A (imidacloprid + flumethrin) – replace every eight weeks.
- Brand B (selamectin) – replace every twelve weeks.
- Brand C (slow‑release) – replace every six months.
When the collar reaches the end of its labeled period, remove it promptly. If the collar becomes loose, damaged or the cat shows signs of irritation, discontinue use regardless of the remaining time. Continuous monitoring of the collar’s condition ensures optimal flea control and minimizes risk of adverse reactions.