I have learned to look to this website for help with so many things. Today, it was my guinea pig, Chip, who needed assistance. He seems to be impacted, but not constipated. He almost appears to have a hairball. Anyway, I did what I knew I should to give him some immediate relief, and looked here for further advice. I found a posting from Nifty about the website: www.guinealynx.com . It's full of all sorts of information. I learned so much. And so........I'm here to say a huge THANKS to Nifty for the link! This was an older posting from back in February, and I just have to say that I'm so glad threads aren't archived on this site. I'm not an overly patient person (my poor family suffers the brunt of that), and I'm not sure I would have taken a great deal of time to search further if it hadn't been here. I did use the "search" feature, and there it was! Thanks again!!