Parex Flea Treatment 3 Pack NEW Parex flea spot-on solution for dogs. No prescription needed. For the treatment of dogs against flea infestations (Ctenocephalides spp.)Insecticidal efficacy against new infestation with fleas persists for up to 6 weeks.
Although the product does not consistently show an immediate acaricidal efficacy (several ticks may be present after48 hours), it has a persistent acaricidal efficacy for up to 4 weeks against Dermacentor variabilis and up to 3 weeks against Rhipicephalus sanguineus. Pack of 3 Spot On Treatments (3 x 6 week treatments)