I have some older plastic items that have become very fragile and brittle. They're not lasting forever.
I also left one of those clear plastic tubs where the sun shines through a window on it. After a couple years, the plastic became very brittle, lost its strength, and the tub pretty much disintegrated.
I also left one of those clear plastic tubs where the sun shines through a window on it. After a couple years, the plastic became very brittle, lost its strength, and the tub pretty much disintegrated.