Anyone who has ever used a Par Aide ball washer has had the thought, What, exactly, is going on in there? (And it is most likely a Par Aide—the St. Paul, Minn., company, founded in 1955, dominates the ...
London's giant ball pit for adults has had a makeover – all 250,000 balls now glow in the dark. It also has a ball cleaning machine, which can clean 18,000 balls per hour, to make sure the place stays ...