Would using puppy pads for subtrate be okay? They are white so im worried about them hurting her eyes. I could use outdoor carpet if needed but i have almost a whole package left over from before my dog was trained and two fit perfectly in her tank. I will only be using them until they run out if i can get a regular subtrate like she had for her smaller tank but i will go buy suntrate asap if puppy pads are not safe. They are also lavender scented, will this be a problem? She doesnt seem to mind the smell at all.