Chihuahua puppies are NOT hard to house train if they are started the right way. Breeders should be starting their potty training right out of the whelping box to set them up for success. I like using a litterbox box and then adding outside time as they get bigger. This puppy has been successfully choosing the litterbox since 4-1/2 weeks old. He has only had one accident which was MY FAULT. I forgot to shut that little fence you see on the other side of the box and he got to a rug. Prevention bu