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The plaintiffs in their complaint reference social media posts, on TikTok and Reddit, from other frustrated customers who have suggested at-home remedies for the noise - including applying coconut oil to the soles of the shoes.

"It was all over the soles of our shoes and on my friend's knee, it was disgusting and upset us all the way home," the mother-of-two added.

The advent of super spike shoes, which feature soles with superlight, springy foams and rigid plates, has also brought a drop in times on the track.

They will silently show you how it’s done with an impossibly balletic ollie, their board magically suctioned to their soles as they slide down the whole length of the thing.

They are meant to collect the powdered tear gas chemicals, to keep the irritants from being tracked into the building on the soles of their shoes like dust.