Mumbai - The growing population of rats in the city has left footpaths and buildings damaged and have caused serious health problems to people. So the Municipal Corporation took the initiative for killing rats. The rate of each rat is Rs 18 as per the minimum Wages Act. Mumbai charitable organizations appealed to fill in the application. But the Brihanmumbai Municipal Corporation has failed to get a proper response by collecting 38 applications out of 24 wards in the city. Now, the corporation has decided to introduce some changes in the proposal.