Municipal solid waste (MSW) is waste or debris accumulated and thrown away daily, such as materials used in packaging, furnishing, clothing, containers, food scraps, papers, instruments, etc. Sources of this waste are our houses, institutions, hospitals, and businesses. With the rise in population, the amount of waste generation is also rising. If the garbage is dumped openly, it creates unhygienic conditions and damages the environment. Dustbins are provided in cities to collect waste, but due to excessive waste, dustbins overflow and remain in this state until the next step of cleaning is done. This leads to problems of bad odor and ugliness. Therefore, it is essential to keep a check on the situation in order to maintain cleanliness and avoid other problems. Use of the Internet of Things (IoT) in waste management is very effective. Better quality of life and wellbeing can be achieved by making all tools, automobiles, and infrastructure interconnected in a smart city. IoT uses a signal system for waste removal that is based on the level of waste in the bin. When the waste has reached a maximum level in the bin, the municipal web server gets a signal requesting instant cleaning of the dustbin. This method reduces the wastage of money, time, and fuel of garbage pickup trucks. Another advantage is that the garbage is removed before the bin overflows, keeping the environment clean. In addition, these digital bins can also help in the categorization of waste; for example Polish company Bin-e introduced “Smart Waste Bins” which categorize waste into four different types: glass, paper, plastic, and metal. Some sensors can also sense hazardous gases, so necessary action can be taken. This chapter helps to understand the various methods and techniques which can be used for waste management using IoT in smart cities. Key words: IoT, Sensors, Municipal Solid waste