I switched over to bps because of their life span, I have had rodents for years and have welcomed them into my life for 3years or more only to watch them pass beyond to the green fields of fried chicken and bananas. Now the time is coming for my oldest of my two last pet rats. I can sense the time is coming and im sad, I gave him the best life I could. He even stuck with me during my deployment to Iraq. I wish he would live forever!