Spray races are used in many to treat cattle against ticks, flies and other external parasites.
They are an alternative to plunge dips for medium to large properties. As a thumb rule, spray races are a good option for treating several hundred cattle.
Compared with plunge dips, spray races allow a more flexible operation, e.g. it is no problem to change the parasiticide since there is no need to dispose of the old dip wash contaminated with the parasiticide and to recharge it with fresh one, which is always bothersome and expensive for a plunge dip.
Spray races are also less stressing for livestock than plunge dips, which is important for pregnant cows, calves and otherwise weaker animals.