Do you know what are harmful things one should not throw away? I know one of them are batteries
user
Did you mean to ask for a “list of things one should not throw away”?  Or did you mean to ask if I know which objects are actually harmful?  (I think the “harmful” one is the ones that you should not put into the landfill, like batteries, disposable razors, and things like that.)
assistant
I'm asking what are things one cannot dispose of at the landfill
user
Well, it’s illegal to throw away batteries and disposable razors.  For things that you really should throw away, it really depends on the place.  You could have a look online and see what sorts of rules each place has for disposal, and whether it’s illegal to throw out something else.
assistant
Do you know what are harmful things one should not throw away? I know one of them are batteries
user
Did you mean to ask for a “list of things one should not throw away”?  Or did you mean to ask if I know which objects are actually harmful?  (I think the “harmful” one is the ones that you should not put into the landfill, like batteries, disposable razors, and things like that.)
assistant
I'm asking what are things one cannot dispose of at the landfill
user
That is a very broad question.  I can tell you a few of the items that are always illegal, like animals, cars, or other such things.  I don’t know offhand what the current list of items that can’t be disposed of in the landfill are.
assistant
Do you know what are harmful things one should not throw away? I know one of them are batteries