If you mow at the mower's highest setting and water deeply and infrequently, that will minimize your weed pressure simply by doing things you would normally do.

Ha know the old hook up spray big box store kills all weeds leaves lawns ( what ever it's called) has worked well on dandelion for me on fescue. I believe it's rated for KBG but read up on it

I am willing to bet the soil in those spots is compacted and likely out of chemical balance. The dandelions will dig deep roots and will help naturally aerate the soil while simultaneously bringing up nutrients that may be deficient (eg calcium) to the surface area.

Some folks love the look of dandelions. If you love them, leave them. Like others have mentioned, if you keep the turf mowed high and you water deeply but infrequently, your bluegrass should be able to crowd out future weeds.

If you are like most lawn care nuts and can't stand weeds in the lawn, you could use a weed popper or pro plugger to remove the dandelions. Or you could use a broadleaf weed killer (eg Ortho Weed B Gon) to spot spray them.

I forgot about the Weed Hound weed puller.

This forum sold dozens of those tools several years ago. You can walk around and pluck the dandelions out just about as fast as you can step on them.

Don't you risk leaving part of the root in the ground with that puller?

I agree with you owlsnr.. Yeah that part of the yard is very compacted... I also have a weed popper.. Might try that too..

A good tip with those weed pullers is to do it when the soil it wet/damp or use a watering can and wet the individual weeds before you extract them.

I was wondering if part of the tap root is left behind could you hit it with a weed killer down the root hole?