Reefer-GallerNO MOTH Closet Hanger Refill

Are there any warnings about using this product? I thought moth balls were a danger& why does this product not smell as bad as regular moth balls

I want cans that are shown not a plastic box w/hanger.what listing is for the cans? misleading ad-i've ordered twice & not gotten what's shown. help!

How do you us that?

where can I purchase refills