Before you even get your new puppy or dog home there is a good chance that they may have worms. Worms can have a serious health effect on puppies, so intestinal worming should never be overlooked. As a rule, all puppies need to be dewormed every two weeks until 12 weeks of age, then every month until 6 months of age. After six months of age an adult dog needs to be dewormed every 3 months.

There are many routes to infection including:-

Drinking contaminated water,
Contact with other infected animals,
Contact with other infected animal faeces,
From an infected nursing mother (nursing puppies),
Swallowing fleas carrying the infective stage of tapeworms,
Eating meat (such as a rodent) that is carrying a parasite.