Dandelion disaster

That's really helpful both, thank you.
I saw the Weedol one in the garden centre this afternoon - we have nowhere else at this time of year - but couldn't read it, I forgot my glasses.
There was also an Autumn selective weedkiller, Miracle Gro at less than online. Decided to look at the reviews first.
I'm not adverse to dandelions, beautiful in the countryside but this is more than a few. It's fast becoming a carpet of them. Enough wild spots around me without my little lawn becoming one. Sad that I'll loose the daisies too.
Your responses are appreciated. Normally trying to grow stuff, not kill it.