My understanding was that it is not about the bag, but where it tends to end up afterwards. Trash bags mostly end up in landfills, where they do no harm. Grocery bags by contrast have a higher tendency to be mis-identified as recyclable and then get caught by the wind and blown somewhere bad.

I agree completely with the point here, but why are you buying drippy nasty stuff?

I was talking about leftover foodstuffs :)

That's exactly the stuff that doesn't belong in the landfill, compost it.

It still needs to be kept in my kitchen until whatever happens to it happens.