Yes, it is always good for a dog to be kenneled trained. A young puppy needs a safe place to be if it has to be left unattended for a short period of time during the day, or during the night while you are sleeping. Once your Cockapoo has been completely potty trained, made it through the chewing stage, and matured into an adult (about 12 months old) it is safe to leave him/ her unattended outside of the kennel.