My horses teeth get floated once every year. But they can be checked on every time the vet come to see your horse.
My horses allways do it every year!
I think if your horse is over 5 years old then once a year but if over 20 years old then every 6 months
It all depends on the horse and their age but, most horses get them done once a year, young ones probably could get them done twice a year and older ones could probably go a year and a half