I was somewhat surprised to discover that toilet cleaning products seemed to be designed in a way that appealed to men - black bottles with garish type blaring things like "Power" and "Total" and "Max" (that is to say an abbreviation of the word "maximum" rather than a reference to the late, great Max Wall), which I definitely associate with what marketers and advertisers think will appeal to men, as they don't seem to have a very sophisticated notion of gender differentials.

Anyway, it worked on me as I bought a bottle.

When I got home, I was startled to find that it had worked even better than I thought, as I discovered we already had two (now three) bottles of Harpic Total Max Power and one nearly-empty bottle of Toilet Duck, which is essentially the same stuff, but packaged for gentler souls who nonetheless would like to clean their toilets, and I'd forgotten about these altogether. The Harpic liquid itself is blue, the Toilet Duck green, and if you use both it creates a pleasing watercolour effect.