I used a spray attractant to convert my Yorkie from paper pee pads to washable pads. I only had to use it 3x. I too have an entire bottle leftover. That stuff is VERY strong! Don't over spray as I did once or your entire house will smell.
I might suggest that if you are going to stay with pee pads you start out using the washables. It will save you money in the long run and they are more earth friendly. They aren't as bad as washing baby diapers by any means. I bought mine on sale here
Washable Puppy Training/Whelping Pads www.PersonallyPaws.com
They have fancy prints and such but I just went for the straight white pads which are much easier to spot problems or oncoming heats I find.
Whichever you decide, good luck!
Btw, my Yorkies go outside and inside. Come winter, they will only go inside because they hate snow!