Are you confused about the correct way to worm your horse? If so, don’t worry because you are not alone. Almost every website you turn to seems to give different advice, whilst wormer manufacturers and even vets often make it sound equally complicated.
There are good reasons why correct worm control can seem difficult:
- Horses are susceptible to different worm species at different ages.
- Failing to monitor and treat appropriately can lead to serious worm related disease.
- Overuse of wormers is causing drug resistance, meaning some wormers no longer work against some worm species.
However, many adult horses have good immunity to worms and only need worming once a year. Using worm egg counts in place of wormers can reduce costs and is the only way to reduce resistance.
Worming four times a year and considering the job sorted is no longer good enough. Fortunately, worming doesn’t have to be difficult – there are still some basic rules to wormer use, and, if you follow these, your horse will remain properly protected.
Tower Equine Worming Programme
Tower Equine have put together an annual package that will make sure your horse is appropriately tested and wormed throughout an entire year.

How to Worm:
Adult Horses (5 years & over)
A Simple Worming Routine for Adult Horses, five years old or over
How to Worm:
Youngstock (up to 4 years)
Foals and youngsters up to four years need more careful monitoring because their natural immunity to worms has not yet had time to develop.