Doesn't look like the wax build up I get on mine.
If it is wax boiling water on the drivetrain components will get it off - maybe need a couple of tries.
On the wheels I'd try putting a paper towel on top and hitting it with a blow dryer/heat gun til it absorbs into the paper.
Probably already answered but CBA to read preceding 672 posts.
What are the recommendations for removing wax off a chain and associated components?
I'm servicing a mates bike and it is absolutely covered in shite which a normal degreaser won't shift.
Any suggestions?