Beaphar Flea, Tick & Lice Spray is sold for both cats and dogs, but the active ingredient differs by formulation — Beaphar's cat-safe versions use dimethicone or margosa, while some dog-only sprays in the wider market use permethrin, which is genuinely toxic to cats.

A genuine safety distinction between formulations, not a minor detail

This is one of the more important distinctions in flea and tick care: permethrin is a common and effective insecticide in dog-specific products, but cats lack the liver enzyme needed to break it down safely, making permethrin exposure a genuine and serious risk for cats specifically. Beaphar's cat-safe sprays avoid this by using dimethicone (a physical, silicone-based mechanism) or margosa (a natural neem-based repellent) instead.

Given that a single product name can cover multiple formulations across a brand's range, always confirm on the specific pack that it's explicitly labelled cat-safe before using any flea or tick spray on a cat.

• ✓Formulation matters. Cat-safe versions use dimethicone or margosa, not permethrin.
• ✓Permethrin is genuinely toxic to cats specifically, due to a liver enzyme difference.
• ✓Always confirm the specific pack is labelled cat-safe.

Composition & analytical constituents

How to feed it

Confirm the pack is labelled safe for your pet's species, then apply per the guide on the pack.