Looking for bed pads

I read in one of the past forum questions about someone who was using bed pads around the litter box when she had exhausted other avenues in getting her cat to use the box. Could someone please tell me the best place to purchase these pads? I have checked several discount stores and some pharmacies. The only things that have been available are products like Depends. I have not been able to find the large square pads like would be used in a bed. Please help.
Thank you, Janine

I have had the problem in the past, and just put down a tarp underneath the box. When the cat missed the box, it was easy to clean up and spray off.

Thank you. I thought that might be the route I would need to go. I was just hoping one of the discount stores would carry them. The hours they are open are much more convenient. Janine

Janine - I think they are called Chux - they are inexpensive and disposable! A larger drugstore chain should have them.