Dandelion nightmare!

This is not a Dandelion but a Daisy story. I used to use a selective weedkiller on our rear grass and it was weed-free. My neighbour's, who only ever cut his grass, was a mass of Daisies. My preschool daughter would play for hours on his "Daisy grass", making Daisy chains and just picking the flowers. My grass was left alone!