Whenever I don't have time to shine my leather shoes and notice that they are badly in need of same, I use the shine sponge.  The shoes look great as a result, and I have the advantage of no shoe polish to clean out of my nails.  The shine sponge also works well on the rubberized side of the shoes.  Unfortunately, I had been experiencing difficulty in finding this product at the stores where I purchased them before.  Amazon's site came to the rescue, but the order is not a two-day item and takes awhile to arrive.  So, I will keep this in mind when I re-order and will do so before my shine sponge wears out.