UTENSILS  REMARKS
MATERIALS TO BE AVOIDED IN MICROWAVE OVEN 
May cause arcing. Transfer food into microwave-safe dish.
Aluminum tray
 
Metal twist ties
 
May cause arcing. Transfer food into microwave-safe dish.
May cause arcing and could cause a fire in the oven.
Food carton with 
metal handle
 
Paper bags
May cause a fire in the oven.
Plastic foam
 
Wood
 
Plastic foam may melt or contaminate the liquid inside when 
exposed to high temperature.
Wood will dry out when used in the microwave oven and may split 
or crack.