Worming horses is an important part of every horse owner’s care routine. There are different worms that need to be removed from your horse’s guts to keep them healthy. A major worm burden can be life threatening, with potential damage to the gut leading to colic, diarrhoea and other significant problems for the horse, even after the worms have been treated.

The internal parasites which are cause for concern include:

- Small strongyles (small redworms)
- Large strongyles (large redworm)
- Tapeworms
- Roundworms
- Pinworm

Encysted small redworm is particular worrying. The larval stage of the small redworm bury into the lining of the gut, where they lie dormant. They can then develop and emerge en masse from the gut wall in the early spring, causing diarrhoea and colic, with a mortality rate of up to 50%.