Remember your hazardous materials handling: combustibles, toxins, corrosives, flammables, etc.
IIRC, there are classes that contain:
-chemicals (make up, soaps, cleaning supplies, medicines, nail polish remover, etc)
-electrical components (containing hazardous metals, batteries, silicon from circuitry, etc)
-combustibles (spray cans from cooking or cleansers, compressed air cleaners, etc)
Those are the only ones I can recall ATM.
When you look at the white label it should tell you which class (bin) it belongs to.
Each item should be bagged & zip-tied individually (unless it's something like a handful of alcohol prep pads or a number of the same thing) & in its respective bin.
At my store we then bagged each class together in another heavy-duty bag that was zip-tied, slapped with ID labels & put in a box that was likewise labeled before pick-up.
It's been a while so likely there have been changes & hopefully someone will pipe up with updates.