Advantage is now available without prescription for the prevention and treatment of fleas in cats and dogs and the treatment of fleas in rabbits. Advantage should be applied once a month and is easy to use: you simply apply a pre-measured dose from an easy-to-use applicator tube. Just part the hair of your pet between the shoulder blades of your dog or on the back of the neck of your cat. Then apply the solution on your pet's skin. That's all there is to it. Advantage also kills flea larvae in the home, wherever the treated pet goes! Fleas are killed within one day following treatment. Read more…Advantage is water-resistant. It continues to work even when your pet gets wet. Advantage works against fleas even after a shampooing, swimming or exposure to rain or sunlight. This is especially important for animals with skin conditions that require bathing and dogs that swim frequently. More importantly, the studies also show repeated treatments are not required because Advantage continues to work even when your pet gets wet. Not suitable for puppies or kittens under 8 weeks of age, or rabbits under 10 weeks of age. Picking the right Advantage product for your petAdvantage 40: for cats, dogs, rabbits weighing less than 4kgAdvantage 80: for cats and rabbits weighing more than 4kgAdvantage 100: for dogs weighing more than 4kg and less than 10kgAdvantage 250: for dogs weighing more than 10kg and less than 25kgAdvantage 400: for dogs weighing more than 25kgAll the advantage packs contain 4 applications for 4 months protection. Don't forget to use a household spray such as Indorex or RIP Fleas for complete protection.