The next option is called luring. Get down in front of your puppy, holding a treat as a lure. Put the treat right in front of the pup’s nose, then slowly lift the food above his head. He will probably sit as he lifts his head to nibble at the treat. Allow him to eat the treat when his bottom touches the ground. Repeat one or two times with the food lure, then remove the food and use just your empty hand, but continue to reward the puppy after he sits. Once he understands the hand signal to sit, you can begin saying “sit” right before you give the hand signal.
Any area that the pup has access to must be kept clear and clean. Put out of puppy's reach anything you don't want him to chew or destroy. Do not allow your puppy to have unsupervised access to 'unchewables.' Do not chase the puppy in an attempt to take something away. Instead provide puppy with her own toys and teach her how to play with them exclusively.