Which is why I am quite delighted that Maplin have a TFT screen cleaner on sale at half price, that actually does a good job.

The triangular shape and stiff backing mean it gets in those corners, and the squirty spray gets rid of embrrassing projectile sandwich remains, and yet leaves no trace of streak behind.

This should be such an easy thing to do, and important since we all gawp at screens morning, noon and night. But I’ve spent a lot more in the past and got a lot less…