Hi. My maltese only pees/poops in pee pee pad. We use the large square "mats" that absorb urine that would be used in a hospital under a patient. I fold them to the size we need.
I wash them together with bleach and soap once a week. I have had then for over ten years (I have 7 of them).
Perhaps you can purchase these? We got from a nurse in our family.