Do not use in kittens less than 8 weeks old and/or weighing less than 1 kg, in the absence of available data. Do not use in sick (systemic illness, fever, etc.) or convalescent animals. Do not use in rabbits as sometimes lethal side effects may occur. Do not use in case of hypersensitivity to the active substance or to any of the excipients. For external use only. A pipette of 0.5 mL allows the treatment of one cat, which corresponds to a minimum recommended dose of 5 mg of fipronil per kg of body weight. The minimum interval between two applications should not be less than 4 weeks. For more details, see the instructions inside the box.