I bought a horse here recently that has thrush and was treating it with Listerine every afternoon after feeding and picking his feet. It started getting better so I went to every other day which was a mistake because we got into a lot of rain which made it hard to get his feet done with no concrete slab or dry area. I lapsed for about a week on doing it and it came back in full force.
I went to the Pete's Goo last week and cleaned them with dawn dish detergent before applying. After the cleaning and treatment session yesterday he is looking great. I no longer need to use the goo, but still clean them with dawn, dry them with a towel them saturate them with listerine. Give him plenty of time for the Listerine to dry in before turning him out. I will keep doing this every other day until I see no signs of thrush. I have also added in the other 4 horses, who do not have thrush, on the listerine treatment. I pick their feet then saturate them. Preventive maintenance.