Comfortis Chewable Tablets for Dogs are a meat flavoured tablet that rapidly kills fleas on dogs and then goes on to prevent flea infestations for a further month. Comfortis starts to kill fleas within 30 minutes of administration and will kill 100% of fleas on a dog within 4 hours. The chewable meat flavoured tablet is readily accepted by dogs and as the product is an oral medication there are no restrictions with regards to swimming or washing after treatment. Comfortis comes in 5 convenient sizes for dogs between 5 and 119 lbs in weight. Comfortis is registered for the control of flea allergy dermatitis in dogs.