Each horse should be dewormed every 6 months with an Ivermectin product (Spring and Fall). Ivermectin is a larvicidal (will kill parasite larvae), and if used every 6 months on each horse, large strongyles will be eliminated from your farm.

What months should horses be wormed?

Worming throughout the year

Horses only need treating for tapeworm twice a year as the lifecycle takes six months to complete. This should be done in March and September. This can be done using a praziquantel or a pyrantel based wormer.

How do you tell if a horse needs to be wormed?

Common signs a horse needs worming are weight loss, diarrhea, fatigue, itchy rear-end, and an off-color or unhealthy coat.