Pay attention when you're sorting your recyclables. Many people believe all plastic is the same. But in fact, there are several grades of plastic that are coded by numbers 1 through 7. The most commonly recycled plastics are No. 1 and No. 2 types: milk jugs, detergent bottles, etc. It's imperative that you only put out what your local community accepts for recycling. By mixing non-recyclable and recyclable plastics together, you risk contaminating the whole load, which means a whole batch of recyclables might have to be dropped off at a landfill instead.