I used to have scads of it, but now it only reoccurs in a couple of places in the garden, mostly because I hate to pull it when I should. If not as gardening adults, surely as children. I know I couldn't when I was young. Now, I grab them with cupped hand, slowly, pull them off and stuff them in my pocket to discard in the trash. If I can't pull all of them, I'm sure going to try to stop them from seeding as much as possible.
Dandelions are sneaky plants.
Their buds hide nestled close to the ground to rise overnight into flowers. As the flowers fade, the stems drop back to horizontal to wait until the seedheads ripen. On the left is a seedhead , while on the right is a flower bud - both at horizontal. Here a maturing seedhead begins to turn upward - which also happens overnight. You can go around and pull every flower and seedhead you find, only to step out the next day to find upright stems holding balls of fluff, or worse, parts of them or empty nubbins where they used to be.