Ā Ā Ā Ā Ā Ā Look for airtight and food grade containers. If made from plastic, check for a āBPA-freeā label. BPA, or Bisphenol A, is a chemical found in hard plastics and is a known endocrine disruptor, according to theĀ National Institute of Environmental Health Sciences. Many manufacturers have since removed BPA from their products. You should also avoid containers with recycling codes 3, 6 or 7, per theĀ American Academy of Pediatricsā recommendations. Containers with these codes contain phthalates, styrene and bisphenols, respectively.