Plastic #5 (Polypropylene) Put in Recycling Cart Clean Out Containers If a container once held food, clean and dry the container as well as you can before recycling it. Containers with food, liquids and other residues can contaminate whole batches of recycling and are often sent to a landfill. Keep Caps On When recycling plastic containers with caps, leave the caps on. While caps used to be difficult to separate from containers, recycling equipment and processes have advanced, and it is much easier now to recycle the whole bottle at once. Find out more from the Association of Plastic Recyclers (PDF). Avoid Heating Plastic Keep plastics containing food or drink out of the microwave, dishwasher and other hot places, like your car. The warmer plastic gets, the more it tends to break down, melt and release chemicals. Did You Know? What Items Are Made From Plastic #5? Plastic #5 is used to make items including yogurt cups and tubs, margarine tubs, syrup bottles, plastic bottle caps, straws, food storage containers, sunglasses, plastic furniture, and car parts such as bumpers and trim. What Plastic #5 Can Become Plastic #5 can be recycled into battery cables and cases, brooms, brushes, bicycle racks and ice scrapers.