Sir, Russell Jenkins and Alan Hamilton (“No kidding, it’s a playground to keep those over sixty swinging”, Jan 31) ended their article with “Let’s go for it, gran. If only that WD-40 stuff worked on knees”.
The strange thing is it does. There’s nothing in it to harm you and the main constituent, apparently, is fish oil. I suffer from arthritic hands and a quick spray works wonders first thing in the morning if I am doing something requiring digital dexterity.
Brian C. Smith
Chard, Somerset