A sponge (/ˈspʌndʒ/ SPUNJ) is a cleaning aid made of soft, porous material. Typically used for cleaning impervious surfaces, sponges are especially good at absorbing water and water-based solutions.
Originally made from natural sea sponges, they are most commonly made from synthetic materials today.
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Washing is a method of cleaning, usually with water and soap or detergent. Regularly washing and then rinsing both body and clothing is an essential part of good hygiene and health.
Often people use soaps and detergents to assist in the emulsification of oils and dirt particles so they can be washed away. The soap can be applied directly, or with the aid of a washcloth or assisted with sponges or similar cleaning tools.
A tawashi (たわし or 束子; lit., a bundle) is a scrubbing brush for wet cleaning, of a style that is popular in Japan. Traditionally, tawashis were made from the hemp palm. In Japan, sponges used for rubbing and washing are now treated as forms of tawashi. A metallic tawashi (金属たわし, kinzoku tawashi) is made of metal; steel, stainless steel, and brass are frequent choices. They may be used in removing scorching and rust.