Advantage 250 for dogs is formulated to treat to treat your dogs flea infestation quickly and effectively it contains 10 ml 100 mg imidacloprid and 01 butylated hydroxytoluene e321 as a preservative fleas can cause your pet great discomfort and irritation help tackle this problem today with advantage 100 for dogsthis product is great for preventing and controlling flea infestations that your canine friend may come in contact with dosage less than 4 kg bodyweight advantage 4