How to use these scrub pads? Do they require special soap or liquid for cleaning?
No. You can use them like you would use any other scrubber.
Are these coconut scrub pads multi-purpose? If yes, where can I use them?
These are rough scrubbers that can be used to clean any suitable surface.
Does it use any type of harmful adhesives or rubber for binding?
Since these pads are multi-purpose, on which surfaces can I use them?
Any suitable surface. These are rough scrubbers that serve to remove stuck dirt.