This optical illusion billboard is genius – and gross

Frontline ad featuring people walking over a poster of a dog to create the illusion of them being fleas
(Image credit: Saatchi & Saatchi)

If there's one thing the best print ads have in common, it's that they're all double-take worthy. And that's certainly true of this example that's recently resurfaced on Reddit, where it's going down a storm.

The ad for Frontline flea treatment features, at first glance, a dog itching itself in an attempt to rid itself of dozens of tiny black fleas. But on closer inspection, it soon becomes clear that those aren't fleas... they're people.

Frontline ad

The agency's submission to Ads of the World features shots of passersby's reactions. (Image credit: Saatchi & Saatchi)

The ad, created by the Indonesia branch of Saatchi & Saatchi, was placed over the floor of a shopping mall in Jakarta, covering 225 square metres.

From car logos made of tennis rackets to clever road safety warnings, we've seen plenty of ingenious print ads over the last few months – but none have scratched the design itch quite like this one.

Daniel John
Design Editor

Daniel John is Design Editor at Creative Bloq. He reports on the worlds of design, branding and lifestyle tech, and has covered several industry events including Milan Design Week, OFFF Barcelona and Adobe Max in Los Angeles. He has interviewed leaders and designers at brands including Apple, Microsoft and Adobe. Daniel's debut book of short stories and poems was published in 2018, and his comedy newsletter is a Substack Bestseller.

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