This post is up to 100% effective

This post is up to 100% effective.
Of course it is.

Because it could be 0% effective and the claim is still true.

You’ll find versions of this claim on most cleaning or bleach products, no doubt the bastard child from an awkward and unsatisfying tryst between marketers and lawyers.

Yet the claim still works to convince consumers of its product power, despite quite openly and perfectly legally claiming to be effective anywhere from, zero. “Yes, our bleach could quite easily be 0% effective on stains” is an identical claim to the one they publish. FMCG marketing is a comical world of its own.

Weirdly, I saw one of these products claim to be ‘up to 99% effective’ which I found hilarious, as if “up to 100%” is somehow a superfluous reach too far… clowns.