Fipronil and imidacloprid were both banned ... In my opinion, preventative flea treatment is neither necessary nor desirable ...

Fipronil kills adult fleas and ticks ... Minimum age and weight: Flea treatments are intended for dogs above a minimum age and weight. Your options for a very young puppy will be more limited ...

There is concern that anti-flea and tick treatments are washing into watercourses ... and another neonicotinoid, fipronil, was detected in 98% of samples. Further research published earlier ...