If it is a smaller dog, I found this in my Doctors Foster & Smith magazine.

Puppy Go Potty System
Fill lined Puppy Go Potty pan with scientifically formulated "attracting" litter, praise pup when he eliminates in box, then simply scoop waste away. He'll be trained in no time to use the box when you're not there. Includes training guide, 8 disposable cleaning cloths, 20 lbs. super-absorbent litter, 8 oz. Simple Solution Stain and Odor Remover, traning treats, and vinyl gloves.

Puppy Go Potty System KY-10285 $45.99
10 lbs Replacement Litter #KY-10348 $8.99

You can find this item at www.doctorsfostersmith.com

Hope this helps.