Teething usually begins at four or six months and could last two or three months, depending on the breed and size of your full-grown puppy. Most chewing, however is the latter, and puppies do not outgrow boredom destruction. The number of toys that you purchase is important, but not as important as the TYPE of toys you buy. Dogs like toys that taste good or reward them for chewing. If a toy is broken into big chunks that can be swallowed, it is best that you do NOT give that toy to your dog.
Toys can cause choking hazards with aggressive chewers.
Use your best judgment and follow the package directions. The furniture or landscaping can testify to that. Chewing on toys can also discourage other bad behaviors such as digging or barking. If your dog is not interested in them but is a chewer, use a bit of peanut butter or bacon grease to stimulate interest. Keep all toys in a central location that is easily accessible at all times.