Is Summer Worming Beneficial in Australia?

Summer worming can be beneficial, but it shouldn’t be automatic.

Climate Matters

In hot, dry regions, parasite larvae often struggle to survive on pasture, meaning summer treatment may offer limited benefit.
In warm, humid or coastal areas, especially after rain — parasites can thrive, increasing risk.

Test Before You Treat

Routine, calendar-based worming contributes to resistance. Instead, use:

• Faecal Egg Counts (FECs)
• Strategic treatment based on results
• Good pasture hygiene (manure removal, rotational grazing)

Who May Benefit Most?

• Foals and young horses
• Pregnant mares
• Horses with high egg counts
• Properties with high stocking density

Bottom Line

Summer worming can be beneficial in Australia, but not on a blanket seasonal schedule. It works best when based on local conditions, actual parasite levels, and sound pasture management.

Final Thought

Good parasite control isn’t just about when you treat, it’s about how intelligently you treat. With rising resistance and varied Australian climates, smarter, targeted deworming beats calendar-based plans every time.