Which topical solution is used to control ascarids, hookworms, and tapeworms in felines?

Emodepside/praziquantel is a combination topical solution specifically formulated for the treatment of multiple parasitic infections in felines, including ascarids, hookworms, and tapeworms. This medication combines the action of emodepside, which is effective against intestinal worms, particularly hookworms and ascarids, with praziquantel, which targets tapeworms. The synergy of these two compounds allows for a broad spectrum of efficacy against various types of intestinal parasites that commonly affect cats.

While praziquantel alone is effective primarily against tapeworms, it does not have the capacity to treat ascarids or hookworms effectively without the combination with emodepside. Selamectin, on the other hand, is primarily used for ectoparasites and heartworm prevention but does not cover all the mentioned intestinal parasites. Fipronil is focused on external parasites such as fleas and ticks and would not be effective against the intestinal worms listed in the question. Thus, emodepside/praziquantel is the most appropriate choice for comprehensive control of the targeted parasites in felines.