I've been on a field with little airsoft play in the past year, and there are BBs that have been there for years, still intact. A little weathered, but almost usable. These are in areas of the field nobody has used for game play in almost 2 years, since September of 2006.
Plastic water bottles are not the same plastic as a BB. There are thousands of different plastics, and some will last for decades exposed to moisture and sunlight. PVC and ABS are such plastics, and I've seen PVC pipe that is 20+ years old in direct sunlight and it's still holding up.
How quickly do bio BBs last is a better question, and how much longer than "non-bio" BBs?
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Age verifier Northern Alberta
Democracy is two wolves and a sheep discussing what's for dinner.
Freedom is the wolves limping away while the sheep reloads.
Never confuse freedom with democracy.
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