It can be SO frustrating to housetrain - and from what I have read here everyone's little ones are so different. I trained Otis to use a bell, but after him ringing it to go outside every 5 minutes I gave in and bought a doggie door. It has changed my life
! I live in a townhouse with no yard so he goes in a litterbox lined with a puppy pad that is on the balcony... it took him about 10 months to be 100% house trained. Keep it up - you will find a schedule that fits your dog !