Toto began domestic production in 1969, but wash air seats were expensive and sometimes caused scalding injuries due to poor regulation of water temperature.
[citation needed] In 1980, Toto began to sell its improved Washlets in Japan after surveying employees to determine appropriate spray positions, since there were no biometric statistics available.
[citation needed] In 1996, Toto also released Washlets designed for Japanese-style squat toilets, but they proved difficult to use due to accuracy issues.
[citation needed] In October 2005, Toto released other improvements, incorporating sleep mode for energy conservation, a remote control, and a Washlet that could play MP3 audio files.
"[6] The cleansing features include buttons labeled Oshiri ("Rear") and Bidet ("Front") with translations in English speaking regions.