Setting up a toilet seat bidet-toilet , you will get much more free space in the bathroom, avoiding a classic bidet installation . Bidet-toilet is perfect for bathrooms with limited space. Using a bidet improves your personal hygiene and is an eco-friendly choice too . Just consider that in the United States every year more than 15 million trees are needed to produce toilet paper. According to a research carried out by the "Scientific American" magazine to produce only one toilet paper roll 37 litres of water are needed together with chlorine for the bleaching, energy to produce it, plastic for the packaging and petrol for the transport. Using a bidet means to drastically reduce the use of toilet paper and protect the environment.