Cat deworming tablet

Brand: Drontal ( brand from Germany) 1 Tablet use for a 4kg cat, uses on every 3 months This is a very good brand from Germany, they are authentic, they can be used for adults and kittens. Why you should give your cat deworming every 3 months? Worm is very dangerous for cats , this tabs cat destroy intestinal worms, helps intestinal tract healthier DM me to get more information