Keeping your dog's paws clean is simply a matter of a little preparation prior to walking out the door.
You'll need a towel or Spotless Paw glove and a shallow container filled one-third of the way with room-temperature water. Place these items by the door you'll use upon returning. Once the walk is over, dip each of your dog's paws into the water. Dry them off and let your dog go about its business.
This practice is especially useful during the winter months when sidewalks and driveways are often covered with ice-melting agents.
Get more information on the Spotless Paw.