Getting started with your worm egg counting routine
Every horse owner wants to keep their horse healthy and happy and regular worm egg counts are one of the easiest ways to do just that. Adding this simple test to your horse care routine can make a big difference in managing parasites effectively and protecting your horse for the long term.
Why worm egg counts are SO important
No horse is immune to parasites. Whether you care for a pony in the paddock, a competition horse, or a retired companion, all equines can carry worms. A fecal worm egg count (often called a WEC, FWEC or FEC) is a quick and non-invasive test that measures how many parasite eggs are in a small sample of droppings. This information helps you decide if your horse actually needs worming. By treating only, when necessary, you help protect worming medications from becoming less effective over time and you avoid unnecessary costs too. Blanket worming without testing is considered old fashioned and is no longer best practice. Not every horse carries a heavy worm burden, and using wormers too often encourages resistance. With regular FECs, you can make smarter decisions and keep your horse healthier.
How often should you test?
Parasite control isn’t a once-a-year job. It is something to keep on top of through the grazing season.
Here’s a simple guide:
Worm egg counts every 8–12 weeks help track strongyle and roundworm levels.
Tapeworm testing twice a year is essential because tapeworms don’t show up in regular FEC results and so a saliva test is needed for this.
In winter, encysted redworm larvae may need to be tackled with a blood test or seasonal treatment, since these stages of the larvae life cycle do not appear in dung samples.
Healthy adult horses often follow this straightforward testing schedule. Foals, older horses, or those with higher risk may need more frequent checks.
What to do with the results
If a test shows a high egg count, that is when worming is necessary. Our SQP at Worming Wisely or your Vet can explain what the results mean and recommend the most suitable treatment.
If the count is low, there’s usually no need to worm. This means less medication, less cost, and less chance of resistance building up in the parasite population.
Good pasture management.
Testing is just one part of the picture. How you manage your fields plays a big role too:
Pick up droppings at least twice a week to reduce the number of larvae on the pasture.
Avoid overstocking so fields don’t become heavily contaminated.
Rotate or rest paddocks to help break the parasite life cycle.
Combining testing with sensible pasture management is part of a strong, sustainable parasite control plan.
Making parasite control easy
With a regular testing schedule and a bit of good pasture hygiene, you can stay ahead of worms without overusing treatments. It’s better for your horse, your wallet, and the effectiveness of wormers in the future.
Keeping parasite control simple and targeted helps ensure your horse thrives all year round.
Got questions about your horse’s worming plan? We are here to help. Get in touch for friendly, expert advice.
