Beaphar Fiprotec Combo Spot-on Solution Big Dogs 20-40 kg 3 Pipettes of 2,68ml is recommended as a part of a treatment of infestations by fleas only durng 8 weeks or icombination nfestations by the fleas and ticks and/or crushing lice (during 4 weeks).
It is indicated to prevent from multiplication of lice by inhibition of development of eggs, larvae and pupae from eggs laid by adult fleas for 8 weeks after application.