However, dogs should not be in crates for long periods of time. (reference.com)
If it is a multiple dog situation, I only recommend these if each dog is in a crate while you are gone to prevent any issues with resource guarding. (themoderndogtrainer.net)
If you puppy is in a crate stay close to it, when the whining happens move further away from the crate. (caninejournal.com)