Here are just a few of the features that together set Comfortis® apart from other flea products you may have used in the past: Fast-acting Starts to kill fleas in 30 minutes Lasts a full month Convenient Beef-flavoured chewable tablet Family-friendly No mess - play with your dog immediately after treatment No risk of application site reactions Can't be rubbed or shaken off - won't stain carpeting, upholstery or clothing or damage hard surfaces Can't wash off Can't be washed or rinsed off during bathing or swimming. How do you use COMFORTIS? Thanks to the fact that Comfortis® comes in beef-flavoured, chewable tablets, it's one of the most convenient flea products on the market today Give Comfortis® chewable tablets once a month with food for maximum effectiveness. If necessary, Comfortis® may be administered like traditional tablet medications. Give the correct dose of Comfortis® based on your dog's body weight. For best results, and in areas where fleas are common year-round, monthly treatment with Comfortis® should continue the entire year without interruption. Ask your veterinarian about your pet's specific needs. To minimise the likelihood of flea reinfestation, treat all animals in your household with an approved flea product.