If you don't have a doggie door, your dog will no doubt have difficulty expressing its desire to go outside. Even if it's not for relieving itself, it may just want to chase after some birds or something.

Poochie-Bells are a great way to reduce some of this difficulty simply because it allows you to hear the bells ringing. You could be in another room of the house, and still hear your dog asking to be let out. It's an audible signal when you're focusing on something else.

The company that makes Poochie-Bells has a wide variety of styles and colors, and publishes a training guide on its website.

$29.99 for a set of bells with 3 ribbons