Second change Treat feeders

I bought the treat collector and treat feeders today. They are called Candyman and Cupid one collects the treats and one feeds them.  I like them allot and if I had a smaller zoo this would be great. They worked well and greatly reduced my harvest times.. Here are my ???

• How do I get more juice boxes ?  The ones I got did not feed all the animals in my zoo. Do they build up over time or do I buy them.
• Can we have these Juice boxes included in the unlimited gifts ?