my horse eats the likits in about 5 mins as well then tries to eat the plastic holder..He also has a ball with cond cubes in last thing at night and loves banging it round the stable, the poor neighbours
The decahedron things are brilliant - we sometimes have the odd day in if the fields are really wet and filled with chopped carrots they keep my girls entertained for hours.
If you chop the carrots a bit bigger they take longer to get out. Highly recommend them.