The mare I am getting in the spring is a very easy keeper. She hasn't been ridden for a little while and she got very chubby. So when I get her in the spring I will be doing lots of riding to get her weight down. But I was also thinking of getting a grazing muzzle. Have any of you used them and if so how did they work? Are they safe to use? I'm just looking at different options as I don't want an overweight horse - especially as she is a bit older. Thanks!