If your dog chews everything in sight then the easiest way to prevent this is by taking away everything that they might chew!!This is much easier said than done.Buying your dog suitable chewing toys will help this problem. My dog loves pigs ears,they keep him occupied for ages.It is advisable to provide your dog with multiple chew toys in case they get bored with one and prefer a change. To keep them occupied you can also buy toys in which food can be placed inside,it encourages your dog to chew the toy and quietly lay down whilst chewing.