Wayne Rumball's House of Nonsense

[Wildbilly]

That' a hoot, but there is a reason for that guidance.

Plastics containing food stuffs are rated on a 1-7 scale, I've tried to make sure to stick with #5 for years now.

Some of the other ratings are prone to leaching over time and in warm places like a garage. Never microwave anything in any plastic of course.

https://www.nontoxicrevolution.org/blog/7-types-of-plastic