Advantage Flea Treatment for Dogs over 25kg, 4 Months Supply BlueThis spot-on flea treatment has been designed for large dogs that weigh 25kg+. It effectively gets rid of fleas and does it fast!It provides relief from flea bites within 3-5 minutes and does not require a bite to occur to be effective. It kills fleas when they come into contact with the treatment.This will result in less painful bites and Flea Allergy Dermatitis. Advantage flea treatment 4 pack gives you a 4 months supply for one dog. It is also safe to use on pregnant or lactating bitches.An effective way to kill fleasKills adult fleas and flea larvae within 20 minutes after contact. A dosage lasts for the entire month and is simple to put on - simply squeeze on the back of your dog's neck and it will spread over his skin. Waterproof - It is still effective even after exposure to rain or bathing.Works well and 100% safe for dogs.