I put it on going over when I put it on sometimes I don't bother. Guess that came from having a cat for 17 years. As for over or under with the cat with mine he didn't care. He would get that sucker going and I would have toilet paper all over the place so I had to keep it in the cabinet that was right next to the toilet. My sister had to get a can to put it in because not only would her can unroll it no matter which way it went like my cat but hers also could open drawers and cabinets and would still things and hide them behinder her entertainment center. Rolls of toilet paper, pot holders and the pieces from her needle point manager scene.