My greedy boy has had mild choke once, this was when he was given half a scoop of dry cubes to keep him occupied. He has had a snack a ball with cubes in most nights over the past few years and has never had a problem, I do put a double handful of chaff in the ball too, to slow him down!
Very low I would say. I used to do it and it never caused problems, they are eaten a few at a time, it isn't really like a horse scoffing down half a bucketload.
I couldn't get my grass nuts IN a ball, these I certainly don't feed dry (although it is common to do so I am told)
Great thanks, want to find a nothing feed to put in toy just to keep pony busy at night so thinking of fibre cubes, just didnt want her to kill herself with it.