Hi. I've heard many people say that Oxbow is one of the best brands. How so? I do purchase Oxbow hay for my guinea pig, and I noticed that the only difference between Oxbow hay and other cheap hay brands is that it says No Additives on the Oxbow packaging. What does that mean? Is Oxbow hay pesticide-free? I know some brands lie that they are, just to make money. Can I really trust Oxbow? Also, another question, are Kaytee pellets quality? I am trying to find a good pellet brand, bit my local pet store only sells Kaytee pellets and Vita Prima pellets. I've already learned that Vita Prima isn't good. But what about Kaytee?