I have a quick question. I do buy some treats for my piggies but only the kind that are all natural or made from things like hay or dried fruits or veggies. I also like to buy treats that provide extra vitamin c. I have seen some treats that are yogurt drops with vitamin c. So my question is this a good way to provide extra vitamin c or can the yogurt be harmful to guinea pigs? My pigs get lots of fruits and veggies everyday and about once a week I give them a few vitamin c drops in their water which they don't seem to mind they drink their water like they normally would. I've also seen tablets for guinea pigs made from fruits like papaya and other fruits the ones I've seen are by oxbow. Are these good for guinea pigs?