Dry heat sterilization is the process of sterilizing containers using hot air. Dry heat can take the form of still or convection. Still heating uses no blowers or moving air. Convection heating uses blowers or fans to keep the heated air moving, reducing the time it takes to heat the environment to the setpoint. Made of stainless steel, carbon steel, or other suitable metals, typical dry heat sterilizers can be used to sterilize animal cages and biological/chemical contaminants.