Wonder Clean is the ideal washing machine to use in any place. It is virtually for everyone. It washes in the same way as the best electrical washing machine, but it does it so much more quickly and easily. How it works: It is neither MIRACLE nor MAGIC - It is SCIENCE. The principle of operation is based ont eh physics laws of pressure and heat. The hot water heast the air inside the container. The heated air "tries" to expand but is prevented so by the hermetically sealed container. When the expansion of the air is prevented, the result is that the pressure is built up inside the container. This pressure causes the soap and water to penetrate forcefully through the garment and the stains are released. Turning the container causes the previously released stain to be removed from the garment. Useful information: Temperature and fabric chart: Delicate fabrics 80-90 degrees F/Luke warm. Nylon and white color synthetics 100-1110 degrees F/warm. White synthetics and cotton blends: 115-125 degrees F/Hand hot. Colorfast cottons and linens 135-145 degrees F/Hot. White cottons and linens 190-195 degrees F/very hot.