I noticed in India they use hand water spray to clean the bottom when you use toilet. Where can you buy that in U.S. ?
It is normally referred to as a bidet and you can buy it from http://www.amazon.com/LUXE-Bidet-Vi-110-Non-Electric-Mechanical/dp/B005IT4C6G. It is a mechanical bidet toilet seat attachment that you use after visiting the toilet. Other unique features include directional control, temperature control and adjustable water pressure.