This is a dog flea collar, comes in a grey colour. Imidacloprid 4.5g Flumethrin 2.03g Uses For the treatment of fleas and ticks. Dosage and Administration For use on dogs over 8kg's. Simply fit the collar correctly as you would any other. Features an easy release mechanism. Remove collar from protective pouch immediately before use. Unroll collar and remove plastic connectors remaining on the inside edge of the collar. Tighten until two fingers fit between the collar and the dog's neck. Use During Pregnancy and Lactation The safety of Seresto has not been established during pregnancy and lactation. Contra - Indications / Warnings Not intended for use in puppies less than 7 weeks of age. Application site reactions such as dermatitis, inflammation, eczema or lesions may occur and in these instances, a temporary collar removal may be recommended until the symptoms have disappeared. In the unlikely event of the animal eating the collar mild gastrointestinal symptoms (e.g. loose stools) may occur. User Safety In the interests of good hygiene, persons fitting/touching the collar should wash their hands afterwards. Keep out of the reach of children. Environmental Safety Any unused veterinary medicinal product or waste materials derived from such veterinary medicinal products should be disposed of in accordance with local requirements