Just wanted to suggest an alternative to the wee wee pads.
I use underpads (bedpads) (you can find them at
drugstore.com Online Pharmacy - Prescription Drugs, Health and Beauty, plus more) and I buy a case at a time. There are 150 to a case and I cut them in half...giving me 300--putting each one near one of the toilets. Works well.
I've trained three separate small dogs this way...a Pom, a Chi, (both gone) and my new little Yorkie.
Hope this helps someone save a little money