Three women died in Thailand while trying to clean a blocked toilet pipe, local media reported on Thursday. A 60-year-old woman and her 34-year-old and 25-year-old daughters had used sulphuric acid and caustic soda – a deadly mixture – in an attempt to unclog a toilet, according to police. The accident occurred on Monday in the province of Chon Buri, south-east of Bangkok. The family had used an unlicensed sulphuric acid product in the small toilet, which was only 1.20 metres by 2.50 metres and had only one small ventilation hole, the Bangkok Post newspaper quoted Trairong Phiwpan from the pol…