Scheduled waste is defined as hazardous waste in Malaysia. It can come from healthcare, industry, agriculture, and households. Sources of scheduled waste include expired drugs, chemical wastes, pesticides, and fluorescent lights. Hazardous waste is characterized by its ignitability, corrosivity, toxicity, reactivity, or infectiousness. In the 1980s, Malaysia lacked scheduled waste facilities, leading to improper dumping. The government now regulates scheduled waste management and disposal through laws and policies to protect the environment and human health. Facilities include transportation, secure landfills, incineration plants, and physical/chemical treatment plants. However, challenges remain regarding the high costs of proper disposal and illegal dumping of untreated waste.