Actress Kajol, an active supporter of eradicating preventable deaths from hygiene-related issues, has become an advocacy ambassador for a Swachh Aadat Swachh Bharat initiative.Kajol on Thurday took to Twitter to urge people to become "swachhta doot" and contribute to Prime Minister Narendra Modi's Swachh Bharat Abhiyan."It's a great honour to be chosen as the Advocacy Ambassador for the Swachh Aadat Swachh Bharat 'haath muh bum' initiative Hindustan Unilever. I urge people to become a Swachhta Doot and contribute to a better tomorrow," Kajol tweeted. Kajol's husband and actor Ajay Devgn expressed his happiness over her achievement.