Plastic isn’t necessarily perfect, it can e.g. be affected by substances like acids. I’d be incredibly surprised if there wasn’t a material difference between a “virgin” piss bottle and a 10-year one.
If those material differences cause a layer of piss to stick to the plastic which isn’t easily cleanable and dissolves into food over time, they’re gonna care about them.
In the end it’s just plastic.
Plastic isn’t necessarily perfect, it can e.g. be affected by substances like acids. I’d be incredibly surprised if there wasn’t a material difference between a “virgin” piss bottle and a 10-year one.
I don’t think someone eating food from a piss jug cares about material differences in the plastic.
If those material differences cause a layer of piss to stick to the plastic which isn’t easily cleanable and dissolves into food over time, they’re gonna care about them.