/b/veterinary-nursing-news/posts/zoetis-launches-stronghold-plus-spot-on-for-cats Zoetis has launched Stronghold Plus (selamectin/sarolaner), a topical combination of parasiticides licensed for the treatment of fleas, ticks, ear mites, lice, GI worms and heartworm in cats. Zoetis says the combined action of selamectin and sarolaneren-USTelligent Community 10