Bad Housetraining Advice by: Donna - dog-beds-n-beyond.com
I am really sorry about your puppy. I know how broken hearted you must be.
There are some very good litter boxes for dogs if you want to train indoors, but it is not advisable to have a product that can be chewed through by a puppy. Most puppies like to chew. I seems that you received some bad advice.
House training a dog to go indoors is not something we recommend. In some cases I know it is not possible to take your dog outside, but at some point you will need to do this and it simply means double work so it should probably be done right away.