The sign was taped to the wall of a toilet at a mall in America . Comes as new dad Ashton Kutcher raised issue of baby changing for men . Parenting expert says age six is 'too young ' for child to go alone . ' I think it 's clear this sign is inappropriate , ' mother of six says . Other parents argue it 's down to the maturity of each individual child .
The sign was taped to the wall of a toilet at a mall in America . Comes as new dad Ashton Kutcher raised issue of baby changing for men . Parenting expert says age six is 'too young ' for child to go alone . ' I think it 's clear this sign is inappropriate , ' mother of three says . Other parents argue it 's down to the maturity of each individual child .