Lysoform turns its 99.9% germ claim into one survivor

Lysoform had a functional promise: it kills 99.9% of germs. The creative opportunity was to make the remaining 0.1%—normally ignored in the claim—feel tangible and memorable.

Imagine the one germ left alive after Lysoform kills 99.9% of germs, and follow his regret-filled life through the disinfected post-apocalyptic world.

Ogilvy Chicago made The Last Germ a radio campaign, using the surviving germ’s imagined post-apocalyptic reality to dramatise the power of Lysoform’s disinfecting effect.

A decimal in a cleaning claim became the protagonist of a radio world, giving Lysoform’s efficacy promise a distinctive narrative form.

Lysoform’s product promise was that it kills 99.9% of germs. The claim communicates efficacy, but the remaining 0.1% is usually treated as a footnote rather than a source of drama.

Ogilvy Chicago flipped that perspective for The Last Germ. The radio campaign imagined a world in which nearly every germ had disappeared and followed the sole survivor as he struggled with his new reality.

The result made the product statistic audible as a story: Lysoform’s disinfecting power was expressed through the lonely life of the germ it left behind.

It found a fresh story inside a standard efficacy statement instead of repeating the claim literally.

The single survivor gave the audience a concrete character to remember the percentage by.

A post-apocalyptic setting enlarged a small decimal into a complete narrative world.

Radio suited the idea because the audience could construct the empty world through sound and imagination.

A technical claim becomes more memorable when the creative treats its leftover exception as a character with a point of view, not as fine print.

The D&AD archive preserves The Last Germ – Life Regrets as a radio campaign that converted Lysoform’s 99.9% claim into a character-led creative platform. Its transferable move is to dramatise the exception hidden inside a proof point.