Frontline Wormer XL Tablets are designed for dogs and puppies weighing at least 17.5kg. This product is not intended for use in dogs weighing less than 17.5kg. Frontline Wormer XL is a broad-spectrum dewormer effective against common intestinal worms found in the UK, including roundworms, tapeworms, hookworms, and whipworms. The tablets are meat-flavored (pork flavored) to be palatable for dogs and can be given directly or mixed with food.
They are suitable for dogs and puppies from 2 weeks of age weighing at least 3 kg, and are also licensed for use in nursing dogs.
Recommended frequency: Routine treatment is typically recommended every 3 months. However, in higher-risk situations (e.g., living with young children, immunocompromised individuals, or if there's a frequent risk of infection), or if a heavy roundworm infestation is suspected, it may be necessary to worm more frequently. In such cases, it is important to consult a veterinarian for advice. 
FRONTLINE® WORMER for cats is a broad-spectrum wormer that kills common intestinal worms found in the UK, specifically roundworms and tapeworms.
Administration: These tablets are also meat-flavored and can be given directly or mixed with food.
Suitability: They are suitable for cats and kittens from 6 weeks of age weighing at least 1 kg, and are licensed for use in nursing cats.
Recommended frequency: Routine treatment is usually recommended every 3 months, according to Pets at Home. Similar to dogs, more frequent treatment may be necessary in certain high-risk situations, and seeking veterinary advice is recommended in those cases. 
It is important to always refer to the specific product packaging and consult with a veterinarian to determine the most appropriate worming treatment and frequency for your pet, based on their individual needs and lifestyle.