Advantage II for large dogs (over 55 lb) is a blue - colored flea treatment that works like magic! It eliminates fleas within 12 hours of application. Not only does it kill adult fleas, but it also targets all flea life stages, including eggs and larvae, preventing reinfestation. Applying it is a breeze, and it's completely safe for your furry friend. What's more, it's waterproof, so it stays effective even if your pet gets wet. This amazing product also treats, prevents, and controls lice infestations. You'll get a 4 - pack in this four - month supply.

Using Advantage II for your large dog is super easy. Just apply it on your dog's skin according to the instructions on the package. Make sure to apply it at the right spot, usually between the shoulder blades, so your dog can't lick it off. As for the frequency, use it once a month for continuous protection. When applying, keep your dog calm and still. After application, avoid bathing your dog for at least 24 hours to let the treatment work effectively. Store the product in a cool, dry place, away from direct sunlight and heat. If your dog has any health issues or is taking other medications, it's a good idea to consult your vet before using Advantage II.