In a renewed push to Swachh Bharat, Prime Minister Narendra Modi has said that 4,000 towns will see new litter bins for segregated waste on June 5, the World Environment Day.“Two types of waste bins will be available in green and blue colour, for liquid and dry waste. If we follow discipline, then the waste bins will collect dry garbage in blue waste bins and liquid garbage in green waste bins,” Modi announced on Sunday in his monthly radio programme, Mann Ki Baat. Experts, however, pointed out that though separate bins were already available in many places but the experiment has not yielded the desired result.The PM said he got a “humorous” suggestion that when he visits or stays at a place, he should ask as to “what would be the standard of cleanliness, how many tonnes of waste could the local authorities “present” him, and accordingly decide the duration of stay.“The idea is very good but I will have to think. I do not know whether I would be able to do it,” Modi quipped. The PM also praised Afroz Shah who spearheaded the cleaning of the Versova beach in Mumbai.