FAQs
How often should I worm my horse?
Only worm when it’s necessary. This should be based on test results and risk assessments with a qualified professional who can guide you. Use faecal egg counts (worm egg counts) every 8–12 weeks and treat based on the results.
What worms should I treat and when?
You can follow a simple test plan to inform when and what to treat for. Blanket targeting specific worms at different times of the year is outdated. Encysted small redworm is the only exception and reviewed on a case by case basis.
Do I need to worm if my horse looks healthy?
Appearance isn’t a reliable method of assessing worming needs. Horses can carry high levels of worms without obvious signs, so testing is essential before deciding whether to treat. We test many horses who look very healthy but are shedding very high levels of eggs or have high tapeworm results and these are directly impacting the area they graze and other horses. The responsible thing to do is get started on a test plan.
What is a faecal egg count (FEC)/worm egg count?
A simple dung test that measures worm egg shedding levels from redworm and roundworm (ascarids) to show whether treatment is needed and help avoid unnecessary worming.
Are wormers becoming less effective?
Yes, resistance is increasing due to overuse. Targeted worming helps preserve effectiveness by reducing unnecessary treatments.
Can I control worms without chemicals?
You can reduce risk with good pasture management (poo picking, rotation and resting), but testing and targeted treatment are still essential.
Should all horses be wormed at the same time?
No, treat horses individually based on test results. A small number of horses carry most of the worm burden. Have you ever heard of the 80:20 rule?