Hobo has a little tartar build up on his teeth. The vet suggested he will probably need a dental in the future. I have had it done for my dog many times because for some reason she gets pretty bad build up. I really should give them all RMB's but I am scared to do it. I have let the dogs chew on deer legs foe 10 minutes a day until they were gone. It didn't seem to help clean them though. How long or often would I need to let him eat a RMB? Or should I just go the dental route?