NAF (Natural Animal Feeds) Off Extra Effect Fly Repellent Gel 750gNAF Off Extra Effect Fly Repellent Gel 750g Pink is in, Flies are out. Key Benefits Naturally effective protection against flies Ideal for horses that don't like sprays Gel for easy use, apply with hand or sponge Great to get to hard to reach places Provides relief from flies, horse flies and insects Size 750g How To Use Apply by hand or with a natural sponge to susceptible areas. Re apply as necessary. As with any new product, apply to a test area