The Elanco K9 Advantix II Spot-On Treatment is a highly effective solution for protecting small dogs weighing between 4 to 10 lbs. This product, with EPA registration number 11556-141, is specifically designed for adult dogs and comes in a convenient 4 pack lot of 2 packs, totaling 8 units. The spot-on treatment from Bayer is easy to apply and provide quick relief from flea and tick infestations, ensuring the well-being of your furry companion.