This refill lets you reuse your FOUGAFLY spray bottle. To protect your horse, we recommend about 40 sprays of the product, keeping the nozzle 30 to 40 cm away, to the following areas: chest, rump, belly, upper limbs. The product's strong odour is what gives it its repellent properties. Remember to reapply the product after extended contact with water (rain or bathing) or heavy perspiration.