General indicators of biological preparation/production that responders should look for can include:

• Noxious odors similar to rotting meat or fermented grain
• Castor beans or plant material
• Rotting food in jars
• Cooling devices such as ice baths, refrigerators, coolers with condensers, etc.
• Heating devices such as hot plates, electric skillets, burners, etc.
• Filtration systems and materials Incubators
• Liquid growth medium, agar plates, or petri dishes
• Fermenters such as home brewing kit apparatus
• Glassware such as flasks, beakers, test tubes, canning jars, etc.
• Used personal protective equipment