I have fed a lami prone welsh pony on this for about five years now and I think it is great. He is 12 hands and 31 years old and can no longer manage hay. He has 3 scoops a day as well as being out during the day and also has Hi Fi as hay replacer.
I also throwing a handful to a plump 3 year old which keeps him quiet!
My 2 1/2 yr old has been on it since about 8 months, only during Oct- March but has had a youngstock supplement with it in the past, is now on top spec lite too.
I began using it because I needed a feed with more in it than chaff that wasn't full of sugar and suitable for a fat baby!
I compared the bag of happy hoof to safe + sound and the s + s seemed better.