Hi Baldwin hedgehog,
I asked the question on here a while ago about feeding the hogs pumpkin seeds to help expel worms, but nobody seemed to know whether it was a good idea or not. I took the view that they couldn’t do them any harm and have used them to good effect ever since. If I spot the dreaded sloppy green, slimy poo for several days on the trot, then out come the pumpkin seeds. I put them in a blender, grind them to a pulp and then sprinkle about a teaspoonful over each dish of food for around a week at a time, so far it seems to have done the trick.
As for the slugs and snails eating the hedgehog food, I don’t let it bother me as long as they don’t eat too much. A least they are not munching their way through my flower beds!