I make homemade dog treats without preservatives but my sis in Florida who owns her own grooming shop, wants me to send her a case of treats with preservatives and labels with detailed description of ingredients and such. Can anyone help me? I mean do I need to put on the vitamin values such as you would find on human food products? I would have no idea how much percentage etc. I read where you can use Vit. E but have no idea how much or if it is the reg. Vit. E capsules for humans??? Anyone have any info??