Welcome. This is Heath, Four Oaks VP.
You are likely here because you spotted one of our No Thrush Powder posts online and now recognize that your horse does, in fact, not only have a heel (sulcus) crack between the heel bulbs but also has softer than normal heels.
This is a major warning sign that there is an active thrush infection occurring right now.
Below there is a link to learn everything there is to learn about sulcus thrush. But here I want to show pictures and make sure that folks are taking care of these heel cracks now – instead of waiting for the wet, cold, muddy months. It is FAR easier to deal with this 30-60 day treatment and regrowth process while wearing a t-shirt and jeans, versus three layers of shirts, a winter coat, and a headlight with waning batteries.
On this page, you will find a few customers’ before and after photos. You will find dozens more here on this site, and on our Facebook page. Notice that we want a “Dimple” in the heel. NOT a “crack.” If a horse has a sulcus/heel crack, it is guaranteed that bacteria will gravitate to that warm, moist, airless area.
An old farrier once gave me a perfect analogy.
He asked, “What happens when you mow your lawn and you take the clipping and spread them out in the sun?”
I said, “They dry up and blow away?
“Right,” he said. “Now, take that same bag of grass clippings, put them in the trash barrel, and close the lid. What will you find in three days?
“It will be a smelly, slimy, green-goo mess.”
“Yup,” he nodded.”That’s exactly what sulcus thrush does inside those heel cracks.
Finally. Before I sign off, I know there are some of you living in warm, dry climates saying, “Yeah, my horse has a heel crack, but the frog and sole are rock hard! “
This may be true at the moment, but I guarantee you that thrush bacteria WILL get inside any open heel crack and it WILL ultimately cause multiple cases of sulcus thrush a year. Think about it. All it will take is for the horse to step in the puddle you made when you forgot to turn off the trough hose. That moisture activates the bacteria inside the crack, and Bamm, suddenly your horse is mysteriously “off” and you can’t figure out why.
Remember: Sulcus thrush hides in the heel so you can’t see it or smell it. Often you won’t even know it’s there until the horse gets a massive case and it becomes abundantly clear that SOMETHING is wrong with that heel!
Sulcus thrush happens at ANY time of the year.
Now, here is the link to the full Sulcus thrush story, as well as the application pro tips for No Thrush Powder to get the best and fastest results.