Why do I need to worm my dog regularly?
All puppies are born with roundworms living in their intestines. These come from their mother during the pregnancy.
A proportion of these worms will encyst in the wall of the intestine and these are not killed by oral worming treatments you might give to your puppy.
Throughout a dog’s life these cysts mature and a live worm can pop out and it is only then that oral worming treatments are effective.
We don’t really know what triggers the encysted worms to become active hence the reason we have to treat regularly. However the newer ‘spot-on’ preparations available through your vet can have some activity against these encysted worms so, on the whole are a better treatment for worms.