Takeout Containers (Plastic) Recycling Cart Rinse Out Before Recycling Plastic containers should be washed out before they are put in the recycling. Food traces contaminate the recycling process. Compostable Plastics Do not recycle plastic containers labeled “compostable” because they will be sorted out of recycling. Did You Know? The Preferred Takeout Container Out of all the types of takeout containers — aluminum, cardboard, plastic and foam — aluminum is the easiest for recycling plants to recycle, while foam is the most difficult.