There are 14 different species of worms that infect cats and dogs in the UK and how your pet becomes infected with which type depends on its life style.
For cats if they are hunters or out-door cats, they will need a regular worming programme; whereas if they are home buddies that never venture out of the door, then just a couple of times a year.
For dogs we recommend every three to four months, as just by walking in any infected area, i.e. parks, woods, anywhere other dogs have been, they can pick them up in their fur.
Obviously, if you see signs of worms then worm sooner.
Worm eggs can survive for years in the environment and can be very resistant to disinfectants, so by picking up your dogs’ faeces you are reducing the build up of worm eggs in the environment. Also remember children play in grass, sand and soil areas, and because worm eggs survive for a long period of time these can be quite easily picked up by them too, as well as yourselves.
Because we only worm our pets a couple of times a year people seem to get the impression that worming products last for a period of time after the worming preparation has been given, therefore preventing further infestation of worms. This is not true; worming products only kill the worms that are present in the guts at the time the worming preparation is given. It does not prevent further infestations occurring.