Here is a list to assist you classify what is classed as hazardous material. Solvents, Corrosive liquid, Biological waste, Medical waste, Creosote (check older wood products), Laboratory waste, Batteries, Aerosols, Gas canisters, Pesticides, Anti-freeze, Paint, Waste oils, Motor oils, Vehicle batteries, Vehicle wheels, Fire extinguishers, Florescent tubes, Light bulbs, Televisions and computer monitors, Fridges, Asbestos, Plasterboard, Explosives.