Most curbside recycling programs accept plastics marked with a No. 1 or 2 resin code on the bottle. These are plastics like soda bottles, laundry detergent containers and clamshells from foods like prerinsed salad mixes. Many common food items like yogurt containers and water filters are made with plastics marked with a No. 5, making them nearly impossible to recycle. The company Preserve Products has an easy and free in-store recycling program called Gimme 5, which collects any type of No. 5 plastics to be recycled. You can find the bins in Whole Foods stores. Learn more at preserveproducts.com.