This is quite a common problem.
Sometimes, puppies chew on pee pads out of boredom. A pad turns into a toy that can be torn apart with pleasure.
If so, come up with a few ideas on how to diversify your puppy’s life. Stock up on some toys that carry a tactile similarity to the pee pads, play some tugging games, teach your puppy easy tricks, etc.
EveryDoggy users say that fixing the pads on the floor with duct tape may work.
You can replace pee pads with a shallow cat litter tray.
Sometimes puppies are attracted by the smell of disposable diaper filler. In this case, you can start using reusable ones.
You can also go to your local pet store and purchase a special grass cover, where your puppy will go potty.