Fungicidal wash for horses – For the control of ringworm and other forms of dermatomycosis in horses Austrazole contains a broad-spectrum clincally-proven topical antimycotic for the treatment of fungal and yeast infections on horses. Ringworm is highly contagious and must be treated if a horse is to be presented for racing or competition.Austrazole is an apply and let dry treatment. No rinsing.