Some things to keep in mind when using the microwave:
If you're concerned about plastic wraps or containers in the microwave, transfer food to glass or ceramic containers labeled for use in microwave ovens.
Don't let plastic wrap touch food during microwaving because it may melt. Wax paper, kitchen parchment paper, white paper towels, or a domed container that fits over a plate or bowl are better alternatives.
Most takeout containers, water bottles, and plastic tubs or jars made to hold margarine, yogurt, whipped topping, and foods such as cream cheese, mayonnaise, and mustard are not microwave-safe.
Microwavable takeout dinner trays are formulated for one-time use only and will say so on the package.
Old, scratched, or cracked containers, or those that have been microwaved many times, may leach out more plasticizers.
Don't microwave plastic storage bags or plastic bags from the grocery store.
Before microwaving food, be sure to vent the container: leave the lid ajar, or lift the edge of the cover.