Our boys are approximately 4 1/2 months old now and are doing great! ( touch wood ). They have been on Oxbow young cavy pellets all along but now only have about 2 weeks supply left. I don't want to have to buy another bag of Oxbow that won't even be half way used when they hit the 6 month mark. My plan is to switch them to KMS pellets when they're of age, would it be ok to switch them early when my current supply of Oxbow runs out?